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BEGIN:VEVENT
SUMMARY:Warped throats\, supersymmetry breaking and infinite distances
DTSTART;VALUE=DATE-TIME:20191219T085100Z
DTEND;VALUE=DATE-TIME:20191219T085800Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107062@agenda.infn.it
DESCRIPTION:Speakers: Eduardo García-Valdecasas\, José Calderón (Instit
uto de Física Teórica UAM-CSIC)\, Ginevra Buratti (Instituto de Física
Teórica UAM-CSIC)\, Angel Uranga (Universidad Autonoma de Madrid)\nI will
explore the interplay between warped throats and some recently proposed q
uantum gravity conjectures\, namely the Weak Gravity Conjecture (WGC) and
the Distance Conjecture (DC). Motivated by the properties of systems of fr
actional branes at singularities\, I will argue for a local version of the
AdS-WGC\, forbidding stable non supersymmetric Anti-de Sitter vacua\, to
large classes of locally AdS warped throats with supersymmetry breaking in
gredients\, and I will discuss some instability mechanisms in detail. Fina
lly\, I will show that warped throats of the Klebanov-Strassler (KS) kind
describe fully backreacted solutions of transplanckiam axion monodromy\, w
here the axion traverses arbitrarily large distances in field space\, and
comment upon the relation with the DC.\nhttps://agenda.infn.it/event/19816
/contributions/107062/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107062/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Tree-level Scattering Amplitude of closed string Tachyons in Orien
tifold theories
DTSTART;VALUE=DATE-TIME:20191219T100100Z
DTEND;VALUE=DATE-TIME:20191219T100800Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107064@agenda.infn.it
DESCRIPTION:Speakers: Stephan Stieberger (Max-Planck-Institut für Physik)
\, Alice Aldi (INFN-Sezione Roma 2)\, Gianfranco Pradisi (Università degl
i studi di Roma "Tor Vergata"\, INFN-sezione Roma 2 )\nThe famous paper [
1] by Kawai\, Lewellen and Tye (KLT) showed that $n$-closed strings scatte
ring amplitudes at tree-level on the sphere can be calculated and written
in terms of $n$-open strings scattering amplitudes on the disk\, using wel
l known techniques of complex analysis. Their results can be summarised (s
chematically) by “$Gravity = (Gauge)^2$”. In the context of Orientifol
d theories\, tree-level scattering amplitudes involving closed string Tach
yons were considered in order to extend their relationship with scattering
amplitudes of open string Tachyons. String $g_s$-perturbation theory for
orientifold theories involves both $oriented$ and $unoriented$ surfaces\,
having Euler characteristic $\\chi = 2 -2g -b-c$ with g-genus\, b-boundar
ies and c-crosscaps. Oriented theories at tree-level are analysed in [1] a
nd [2\,3]\, where only oriented surfaces enter the calculations\, respecti
vely Sphere (S2) and Disk (D2). Following [1\,2\,3]\, we investigate the l
ess studied tree-level string scattering amplitudes on an unoriented surfa
ce\, the Real Projective Plane (RP2) [4]\, and the relation between $n$-cl
osed strings and 2$n$-open strings is found.\nhttps://agenda.infn.it/event
/19816/contributions/107064/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107064/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Higgs Branch and Hasse diagrams
DTSTART;VALUE=DATE-TIME:20191219T103600Z
DTEND;VALUE=DATE-TIME:20191219T104300Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107065@agenda.infn.it
DESCRIPTION:Speakers: Zhenghao Zhong (Imperial College)\nWe look at the ge
ometric structure of the Higgs branch of supersymmetric gauge theories wit
h 8 supercharges in various dimensions. In particular\, the partial orderi
ng between different subspaces of the Higgs branch which can be neatly enc
oded in a diagram called a Hasse diagram. Recent introduction of magnetic
quivers allows a very efficient construction of such diagrams\, giving con
sistent (and more) information compared to the traditional method of parti
al Higgsing.\nhttps://agenda.infn.it/event/19816/contributions/107065/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107065/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Moduli Portal in Dark Matter production
DTSTART;VALUE=DATE-TIME:20191219T102200Z
DTEND;VALUE=DATE-TIME:20191219T102900Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107070@agenda.infn.it
DESCRIPTION:Speakers: Igor Broeckel (Istituto Nazionale di Fisica Nucleare
)\, Michele Cicoli (BO)\nWe investigate the production of hidden sector Da
rk Matter (DM) in type IIB LVS scenarios. We study the possibility of Modu
li fields playing the role of a portal during the production. By matching
the observed DM abundance we make predictions for the masses of different
DM types.\nhttps://agenda.infn.it/event/19816/contributions/107070/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107070/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Pseudo-Democratic Superstring Field Theory
DTSTART;VALUE=DATE-TIME:20191219T092600Z
DTEND;VALUE=DATE-TIME:20191219T093300Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107073@agenda.infn.it
DESCRIPTION:Speakers: Stefano Gregorio Giaccari (Holon Institute of Techno
logy (HIT))\, Michael Kroyter (Holon Institute of Technology (HIT))\nIn re
cent progress in second quantization of the RNS string a crucial role is p
layed by line integral Picture Changing Operators (PCO) which avoid the si
ngularities associated with local PCOs. \nWe show how this approach can be
generalized to a "democratic" theory involving vertices with arbitrary pi
cture number. The usual cohomology problem in the Large Hilber Space can t
hen be reformulated in terms of a dual problem with a two parameters gauge
symmetry. The interactions then emerge in a way analogous to Berkovits' p
icture zero NS theory and do not exhibit an explicit $A_\\infty$ structure
(possibly recoverable by field redefinitions). Batalin-Vilkovisky quantiz
ation is therefore expected to be nontrivial.\nhttps://agenda.infn.it/even
t/19816/contributions/107073/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107073/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Elliptic blowup equations for 6d SCFTs
DTSTART;VALUE=DATE-TIME:20191219T094000Z
DTEND;VALUE=DATE-TIME:20191219T094700Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107077@agenda.infn.it
DESCRIPTION:Speakers: Kaiwen Sun (SISSA)\nAfter the atomic classification
of 6d (1\,0) SCFTs\, one important question is how to compute the elliptic
genera and refined BPS invariants of all such theories. In a series of pa
pers\, we develop the elliptic blowup equations to answer this question un
iversally. Such equations can be regarded as an elliptic version of Gottsc
he-Nakajima-Yoshioka's K-theoretic blowup equations. I will focus on the r
ank one (1\,0) SCFTs with matters and show how blowup equations determine
the elliptic genera and refined BPS invariants.\nhttps://agenda.infn.it/ev
ent/19816/contributions/107077/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107077/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Spin Fields as Point-like Defects on the Worldsheet
DTSTART;VALUE=DATE-TIME:20191219T094700Z
DTEND;VALUE=DATE-TIME:20191219T095400Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107075@agenda.infn.it
DESCRIPTION:Speakers: Riccardo Finotello (Università degli Studi di Torin
o)\, Igor Pesando (TO)\nWe show a new method to compute the correlator of
an arbitrary number of (excited) spin fields based on a time dependent def
ect CFT procedure\, with the possibility to extend it to (excited) twist f
ields\, both in the Abelian and non Abelian cases.\n\nWe consider two-dime
nsional fermions in the presence of point-like defects in the time-like di
rection corresponding to spin fields which provide non trivial boundary co
nditions. We solve them and the equations of motion to define a basis of m
odes in the Euclidean formulation. We compute the algebra of creation and
annihilation operators necessary to build the Fock space in the presence o
f defects. With the definition of the in-vacuum\, we then compute the cont
ractions of the fields and the stress-energy tensor which shows that we ar
e indeed considering a CFT\, notwithstanding the time dependent defects. W
e then proceed to build the Hermitian conjugate vacuum in order to compute
the correlators of the spin fields.\nhttps://agenda.infn.it/event/19816/c
ontributions/107075/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107075/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Subregion action complexity in AdS_3 and in the BTZ black hole
DTSTART;VALUE=DATE-TIME:20191219T100800Z
DTEND;VALUE=DATE-TIME:20191219T101500Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107076@agenda.infn.it
DESCRIPTION:Speakers: Stefano Baiguera (Niels Bohr Institute Copenhagen)\n
We analytically compute subsystem action complexity for a segment in the B
TZ black hole background up to the finite term\, and we find that it is eq
ual to the sum of a linearly divergent term proportional to the size of th
e subregion and of a term proportional to the entanglement entropy. This e
legant structure does not survive to more complicated geometries: in the c
ase of a two segments subregion in AdS_3\, complexity has additional finit
e contributions. We give analytic results for the mutual action complexity
of a two segments subregion.\nhttps://agenda.infn.it/event/19816/contribu
tions/107076/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107076/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Machine learning for QFT
DTSTART;VALUE=DATE-TIME:20191219T091900Z
DTEND;VALUE=DATE-TIME:20191219T092600Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107079@agenda.infn.it
DESCRIPTION:Speakers: Harold Erbin (Università di Torino)\nMachine learni
ng has revolutionized most fields it has penetrated\, and the range of its
applications is growing rapidly. The last years has seen efforts towards
bringing the tools of machine learning to lattice QFT and to string theory
. After giving a general idea of what is machine learning\, I will present
two recent results on lattice QFT: 1) computing the Casimir energy for a
3d QFT with arbitrary Dirichlet boundary conditions\, 2) predicting the cr
itical temperature of the confinement phase transition in 2+1 QED at diffe
rent lattice sizes.\nhttps://agenda.infn.it/event/19816/contributions/1070
79/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107079/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Effective actions from superstring field theory: algebraic structu
re and localization
DTSTART;VALUE=DATE-TIME:20191219T102900Z
DTEND;VALUE=DATE-TIME:20191219T103600Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107074@agenda.infn.it
DESCRIPTION:Speakers: Carlo Maccaferri (University of Turin\, INFN Turin)\
, Martin Schnabl (CEICO\, Institute of Physics\, Czech Academy of Sciences
)\, Harold Erbin (University of Turin\, INFN Turin)\, Jakub Vosmera (CEICO
\, Institute of Physics\, Czech Academy of Sciences)\nStarting with a gene
ral string field theory action which possesses an $A_\\infty$ (or $L_\\inf
ty$) structure\, we derive an effective action for the massless degrees of
freedom. We show that the vertices of this effective action again exhibit
an $A_\\infty$ (or $L_\\infty$) structure. Repeating this procedure for t
he WZW-like heterotic and open superstring field theories formulated in th
e large Hilbert space\, we find that the computation of the quartic vertex
of the effective action for massless modes at zero momentum localizes on
the boundary of the worldsheet moduli space. We show that our results can
be used to efficiently deal with several concrete superstring backgrounds
of interest.\nhttps://agenda.infn.it/event/19816/contributions/107074/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107074/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The L-infinity origin of tree-level scattering amplitude recursion
relations
DTSTART;VALUE=DATE-TIME:20191219T095400Z
DTEND;VALUE=DATE-TIME:20191219T100100Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107067@agenda.infn.it
DESCRIPTION:Speakers: Tommaso Macrelli (University of Surrey)\, Christian
Saemann (Heriot–Watt University)\, Martin Wolf (University of Surrey)\nH
igher algebraic structures are ubiquitous in fundamental physics. For inst
ance\, $A_\\infty$- and $L_\\infty$-algebras emerge in the context of stri
ng field theory. Importantly\, via the Batalin-Vilkovisky formalism\, any
Lagrangian field theory admits an $L_\\infty$-algebra that governs all of
its physics including field equations\, symmetries\, and Noether identitie
s. In this talk\, I will explain the connection between higher algebraic s
tructures and tree-level scattering amplitudes. In particular\, I will pro
ve that powerful recursive methods\, such as the Berends-Giele gluon scatt
ering recursion relation\, emerge very naturally and straightforwardly in
any Lagrangian field theory when using the $L_\\infty$-algebra language.\n
https://agenda.infn.it/event/19816/contributions/107067/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107067/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Remark on the synergy between the heat kernel and the parity anoma
ly
DTSTART;VALUE=DATE-TIME:20191219T085800Z
DTEND;VALUE=DATE-TIME:20191219T090500Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107072@agenda.infn.it
DESCRIPTION:Speakers: Lorenzo Leone (University of Massachusetts Boston)\,
Maxim Kurkov (Università di Napoli "Federico II")\nIn this paper\, we d
emonstrate that not only the heat kernel techniques are useful for the com
putation of the parity anomaly\, but also the parity anomaly turns out to
be a powerful mean in studying the heat kernel. We show that the gravitati
onal parity anomaly on 4D manifolds with boundaries can be calculated usin
g the general structure of the heat kernel coefficient a5 for mixed bounda
ry conditions\, keeping all the weights of various geometric invariants as
unknown numbers. The symmetry properties of the η-invariant allow to fix
all the relevant unknowns. As a byproduct of this calculation we get an e
fficient and independent crosscheck (and confirmation) of the correction o
f the general structure of a5 for mixed boundary conditions.\nhttps://agen
da.infn.it/event/19816/contributions/107072/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107072/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Fuzzy dark matter from the axiverse: how viable?
DTSTART;VALUE=DATE-TIME:20191219T091200Z
DTEND;VALUE=DATE-TIME:20191219T091900Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107299@agenda.infn.it
DESCRIPTION:Speakers: Veronica Guidetti (Istituto Nazionale di Fisica Nucl
eare)\nIn recent years the idea of bosonic ultralight CDM (also called fu
zzy dark matter\, FDM) has been proposed\, in one of its prominent version
s it states that DM is made of ultralight axion-like particles that form h
alos as Bose-Einstein condensates. In this theory each axionic particle ca
n develop structures on de Broglie scale thanks to gravitational effects.
A prominent soliton\, i.e. a state where self-gravity is balanced by the e
ffective pressure arising from the uncertainty principle\, develops at the
center of every bound halo. The extremely high value of the decay constan
t together with the possible multiple axionic nature of FDM have been clai
med to be a possible sign in favour of the string axiverse\, where a pleni
tude of axion like particle naturally arise in 4D effective theory. I will
point out that obtaining a fuzzy dark matter axion with the correct mass
and decay constant is a big challenge for string theory\, being also its
existence in contrast with WGC .\nhttps://agenda.infn.it/event/19816/contr
ibutions/107299/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107299/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holographic complexity
DTSTART;VALUE=DATE-TIME:20191219T084400Z
DTEND;VALUE=DATE-TIME:20191219T085100Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107071@agenda.infn.it
DESCRIPTION:Speakers: Ayoub Mounim (infn)\nMy name is Ayoub Mounim. I am a
Phd student in Naples and I am currently working on Holographic complexit
y.\nThe idea is that this should be a new entry in the holographic diction
ary. In the bulk side we define a new gravitational observable given by th
e value of the on-shell action computed in a bounded subregion of Ads spac
e known as "Wheeler-DeWitt patch". This particular region is bounded by nu
ll boundaries and this brings some subtleties in the calculations. This qu
antity is then conjectured to be the holographic dual of the "complexity"
of the corresponding quantum field theory state that lives on the boundary
of the space. What do we mean by complexity of a quantum field theory is
still to be defined. We know how to define the computational complexity of
a quantum state form quantum information theory\, what we are doing is tr
ying to adapt this concept to quantum field theories and better explore th
is conjecture.\nhttps://agenda.infn.it/event/19816/contributions/107071/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107071/
END:VEVENT
BEGIN:VEVENT
SUMMARY:2d free field correlators\, 3d dualities and E-string on Riemann s
urfaces
DTSTART;VALUE=DATE-TIME:20191219T083700Z
DTEND;VALUE=DATE-TIME:20191219T084400Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107063@agenda.infn.it
DESCRIPTION:Speakers: Matteo Sacchi (Bicocca)\nInfra-red dualities for sup
ersymmetric quantum field theories and their dimensional reductions can be
effectively investigated using supersymmetric localization. With this tec
hnique we can compute exactly some protected quantities\, like partitions
functions e superconformal indices\, that don't depend on the gauge coupli
ng and should thus match between the dual theories. Morover\, it allowed u
s to discover interesting correspondences\, such as gauge/CFT correspondec
es. I will discuss a particular relation of this kind\, between $S^2\\time
s S^1$ partition functions of $3d$ $\\mathcal{N}=2$ theories and $2d$ CFT
correlators in the free field realization. This connection can be used to
guess new $3d$ dualities starting from known identities for free field cor
relators. I will also show that these results can be further uplifted to $
4d$. Unexpectedly\, some of the resulting $4d$ $\\mathcal{N}=1$ models tur
n out to correspond to the theories obtained from compactifications of the
$6d$ $\\mathcal{N}=(1\,0)$ E-string theory on Riemann surfaces with fluxe
s for its $E_8$ global symmetry. They enjoy interesting global symmetry en
hancements that can be predicted from their $6d$ origin.\nhttps://agenda.i
nfn.it/event/19816/contributions/107063/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107063/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A Monte Carlo Approach to the Worldline Formalism in Curved Space
DTSTART;VALUE=DATE-TIME:20191219T101500Z
DTEND;VALUE=DATE-TIME:20191219T102200Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107069@agenda.infn.it
DESCRIPTION:Speakers: Maurizio Muratori (University of Modena and Reggio E
milia)\nNumerical Worldline (WL) Monte Carlo (MC) techniques for particle
path integrals in flat spacetimes have been deeply developed in order to e
xtract physical information from QFT systems. It is however possible to ex
tend such procedures to the case of (Euclidean) curved spaces\, where the
proper-time discretization of a bosonic worldline point-particle is treate
d similarly to a time-slicing regularization for the associated quantum pa
th integral. In particular\, it induces a well-known counterterm in the th
eory which\, together with curvature effects arising directly from the cur
ved metric tensor\, plays the role of an additional potential. To test the
setup\, the numerical evaluation of the heat kernel of a free scalar poi
nt-particle on a 4-hyperboloid is presented\; such system was already stud
ied analytically\, and the expressions of the associated effective potenti
al and of the metric tensor were provided in closed form. The curved space
problem was turned into a flat space one\, allowing for a direct comparis
on between WLMC techniques in curved (the test) and in flat (the check) sp
ace.\nhttps://agenda.infn.it/event/19816/contributions/107069/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107069/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Discrete Symmetries in Dimer Diagrams
DTSTART;VALUE=DATE-TIME:20191219T090500Z
DTEND;VALUE=DATE-TIME:20191219T091200Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107078@agenda.infn.it
DESCRIPTION:Speakers: Alessandro Mininno (Instituto de Fisica Teorica UAM-
CSIC)\, Eduardo García-Valdecasas (Université libre de Bruxelles (on lea
ving from Instituto de Fisica Teorica UAM-CSIC))\, Angel Uranga (Instituto
de Física Teórica UAM-CSIC)\nFollowing the paper called [Discrete Symme
tries in Dimer Diagrams][1]\, we apply dimer diagram techniques to uncover
discrete global symmetries in the fields theories on D3-branes at singula
rities given by general orbifolds of general toric Calabi-Yau threefold si
ngularities. The discrete symmetries are discrete Heisenberg groups\, with
two generators A\,B with commutation AB=BAC\, with C a central element. T
hese generators depend on the abelian orbifold. This fully generalizes obs
ervations in particular orbifolds of the flat space\, the conifold and oth
er toric Sasaki-Einstein manifolds. The generator A is realized as a shift
in the dimer diagram\, associated to the orbifold quantum symmetry\; the
action of B is determined by equations describing a 1-form in the dimer gr
aph in the unit cell of the parent theory with twisted boundary conditions
\; finally\, C is an element of the (mesonic and baryonic) non-anomalous U
(1) symmetries\, determined by geometric identities involving the elements
of the dimer graph of the parent theory. These discrete global symmetries
of the quiver gauge theories are holographically dual to discrete gauge s
ymmetries from torsion cycles in the horizon. Our findings allow to easily
construct the discrete symmetries for infinite classes of orbifolds.\n\n\
n [1]: https://arxiv.org/abs/1907.06938\nhttps://agenda.infn.it/event/198
16/contributions/107078/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107078/
END:VEVENT
BEGIN:VEVENT
SUMMARY:3d S-Fold SCFTs and Supersymmetry enhancement
DTSTART;VALUE=DATE-TIME:20191219T083000Z
DTEND;VALUE=DATE-TIME:20191219T083700Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107068@agenda.infn.it
DESCRIPTION:Speakers: Ivan Garozzo (Bicocca)\nA large class of 3d SCFTs ca
n be engineered inserting a local SL(2\,Z) duality wall into the Type IIB
brane system leading to the so called S-fold SCFTs. These theories are int
rinsically non Lagrangian\, due to the gauging of the global symmetries of
a $T(U(N))$ SCFT\, thus playing the role of non-conventional matter. In t
his talk I will discuss the main features of S-fold SCFTs\, focusing on th
eir moduli space and how mirror symmetry relates them. The construction of
these theories can be extended to various gauge groups\, and in particula
r I will discuss the ones involving $G_2$ gauge group. Moreover\, the issu
e of the amount of supersymmetry these theories possess in the IR will be
addressed employing the computation of the supersymmetric index. In the en
d I will also mention some aspects of theories arising on the S-duality wa
ll of $4d$ $\\mathcal{N}=2$ $SU(N)$ gauge theory with $2N$ flavours.\nhttp
s://agenda.infn.it/event/19816/contributions/107068/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107068/
END:VEVENT
BEGIN:VEVENT
SUMMARY:On Electromagnetic and Color Memories in Even Dimensions
DTSTART;VALUE=DATE-TIME:20191219T093300Z
DTEND;VALUE=DATE-TIME:20191219T094000Z
DTSTAMP;VALUE=DATE-TIME:20211205T144500Z
UID:indico-contribution-107066@agenda.infn.it
DESCRIPTION:Speakers: Carlo Heissenberg (Nordita\, Stockholm)\, Andrea Cam
poleoni (Université de Mons)\, Francia Dario (Centro Fermi\, Roma Tre Uni
versity and INFN)\nAsymptotic symmetries at null infinity do not seem to p
lay a fundamental role in higher dimensions: in constrast with the four-di
mensional case\, in $D>4$ it is indeed possible and natural to describe ra
diative solutions to Maxwell's and Einstein's equations without ever enlar
ging the asymptotic symmetry group beyond the standard global symmetries.
Similarly\, memory effects do not show an immediate link with nontrivial s
ymmetries acting asymptotically\, thus pointing to their absence in higher
dimensions. However\, these conclusions seem at odds with the connection
asymptotic symmetries and memory effects share with soft theorems\, whose
validity extends beyond $D=4$.\nWe investigate this issue studying memory
effects associated to Abelian and non-Abelian radiation getting to null in
finity\, in arbitrary even spacetime dimensions. Together with classical m
emories\, linear and non-linear\, given by permanent kicks in the velocity
of probe particles\, we also discuss the higher-dimensional counterparts
of quantum memory effects\, manifesting themselves in modifications of the
relative phases describing a configuration of several probes. \nAdopting
the Lorenz gauge\, we illustrate how one can interpret such memory effects
as the action of suitable residual symmetries acting near null infinity a
nd propose a strategy for defining infinite-dimensional asymptotic symmetr
ies of Maxwell’s theory in any dimension\, eiher even and odd.\nhttps://
agenda.infn.it/event/19816/contributions/107066/
LOCATION:Aula Magna – Via Partenope
URL:https://agenda.infn.it/event/19816/contributions/107066/
END:VEVENT
END:VCALENDAR