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Dmitri Sorokin (INFN PD)21/10/2019, 14:30
We will review main features of the pure N=1, D=4 SYM and its effective description by the Veneziano-Yankielowicz generalized sigma-model. We will then argue that the construction of 1/2 BPS domain walls interpolating between different SYM vacua requires the presence of a dynamical membrane source. We will show how such a membrane is coupled to the SYM and present the explicit form of the BPS...
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Lorenzo Bartolini (Istituto Nazionale di Fisica Nucleare)21/10/2019, 15:05
In the framework of the Witten-Sakai-Sugimoto holographic model of QCD, we describe our progresses in the derivation of a quantitative prediction for the $\theta$-induced electric dipole moment of the nucleons and their deuteron bound state, discussing current limitations and future directions. Then, introducing explicit isospin breaking in the form of different quark masses, we also...
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Lorenzo Di Pietro (Università di Trieste)21/10/2019, 15:40
We consider interacting conformal boundary conditions for bulk theories of free fields. For a free vector field in 4 bulk dimensions there is a rich class of such boundary conditions, coming in families which are connected by a bulk marginal deformation, and with an interesting action of bulk electric-magnetic duality. For the bulk theory of a free scalar in generic dimensions it is not known...
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4. Einstein manifolds with torsion and nonmetricity and some applications in (super)gravity theoriesLucrezia Ravera (Istituto Nazionale di Fisica Nucleare)21/10/2019, 16:45
I will introduce Einstein manifolds with torsion and nonmetricity and present new applications in the context of (super)gravity theories, focusing, in particular, on models in three dimensions.
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Johan Blåbäck21/10/2019, 17:20
Recently anti-brane singularities have been argued to be resolved when the polarisation have been taken into account properly. The anti-D6-brane singularity however seems to be the odd-one out. In this talk I will present recent work that suggests that the anti-D6-brane can be resolved in the same way by avoiding previous no-gos, and give numerical evidence that these solutions could be found...
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Davide Cassani (PD)22/10/2019, 09:00
The talk will present progress towards a microscopic understanding of the entropy of rotating BPS black holes in AdS. I will describe a new BPS limit of black hole thermodynamics which first focuses on a supersymmetric family of complexified solutions and then reaches extremality. In this limit the chemical potentials obey a constraint that is interpreted as a regularity condition in the...
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Alice Bernamonti (Università degli Studi di Firenze)22/10/2019, 09:35
Based on Nielsen’s geometric approach, the variation of holographic complexity for two nearby target states only depends on the end point of the optimal trajectory, a result designated as the first law of complexity. As an example, we will examine the complexity=action conjecture when the AdS vacuum is perturbed by a scalar field excitation, which corresponds to a coherent state.
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Roberto Auzzi22/10/2019, 10:10
Computational complexity is a quantum information concept that recently captured increasing attention in gravitational holography. In particular, the complexity=volume (CV) and complexity=action (CA) conjectures have been proposed as gravitational duals of quantum computational complexity. In this talk I will discuss these holographic conjectures and their subregion generalizations in a few...
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Veronica Guidetti (Istituto Nazionale di Fisica Nucleare)22/10/2019, 11:15String Theory
I will talk about different aspects of inflationry models that can arise from 4D effective theories coming from type IIB String Theory. In particular I'll focus on concrete embeddings of fibre and Kähler moduli inflation.
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Massimo Taronna (NA)22/10/2019, 11:50oral
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Karapet Mkrtchyan (unipi)22/10/2019, 12:25
I will discuss the problem of duality-symmetric descriptions for free fields
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with the main focus on the covariant Lagrangian formulation generalising
that of Pasti, Sorokin and Tonin for duality-symmetric descriptions in d=4k,
as well as self-dual fields in d=4k+2 Minkowski spaces. -
Zaffaroni Alberto22/10/2019, 14:30oral
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Itamar Yakov22/10/2019, 15:10oral
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Domenico Orlando22/10/2019, 15:50oral
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Francesco Galvagno (Università di Torino)23/10/2019, 09:00
We discuss the computation of the radiated energy by an accelerated heavy particle. This quantity is captured by the one-point function of the stress energy tensor in presence of a Wilson line. In a N=2 superconformal theory we prove that this observable is exactly related to a small geometric deformation of the background geometry. In a four dimensional case, supersymmetric localization...
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Nadir Fasola (Istituto Nazionale di Fisica Nucleare)23/10/2019, 09:35
We study the effective SUSY theory of a surface defect describing the parabolic reduction of gauge connections at punctures on Riemann surfaces, which gives rise to a quiver GLSM. We will show how the partition function of such a theory naturally computes certain virtual invariants of the moduli spaces of stable representations of the quiver and how these results relate to a conjecture of...
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Hasmik Poghosyan (University of Bologna)23/10/2019, 10:10
We consider the third order differential equation derived from the deformed Seiberg-Witten differential for pure ${\cal N}=2$ SYM with gauge group $SU(3)$ in Nekrasov-Shatashvili limit of $\Omega$-background. We show that this is the same differential equation that emerges in the context of Ordinary Differential Equation/Integrable Models (ODE/IM) correspondence for $2d$ $A_2$ Toda CFT with...
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Sara Bonansea (Università degli studi di Firenze)23/10/2019, 11:15
We consider circular Wilson loops in a defect version of N=4 super-Yang-Mills theory
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which is dual to the D5-D3 brane system. When the loops are parallel to the defect, we
can construct both BPS and non-BPS operators. At strong 't Hooft coupling we observe,
in the non-BPS case, a Gross-Ooguri-like phase transition in the dual gravitational theory:
the familiar disk solution dominates when the... -
Azeem Hasan (Istituto Nazionale di Fisica Nucleare)23/10/2019, 11:50
Seiberg duality is an infrared equivalence of two 4d, N=1 gauge theories first proposed by Seiberg in 1994. More recently a triality relating 2d, (0,2) theories and a quadrality relating 0d, N=1 matrix models have been discovered, both of these can be viewed as generalizations of Seiberg duality to lower dimensions. We illustrate these dualities with the help of simple examples arising on...
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Matteo Sacchi (Università degli Studi Milano-Bicocca & INFN Bicocca)23/10/2019, 12:25
Infra-red dualities are interesting phenomena that may characterize the low energy behaviour of quantum field theories. One challenging question is whether it is possible to find some organizing principle that allows us to derive the currently known dualities in low dimensions from some mother dualities in higher dimensions upon dimensional reduction. When the theory is supersymmetric, this...
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Pietro Antonio Grassi (AL)Sugra
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Dr Mritunjay Verma (INFN Napoli)String Theoryoral
The open closed superstring field theory is necessary to study the field theory of an interacting system of open and closed strings. Such systems arise naturally in the presence of D branes. We construct the 1PI effective action and the BV master action for the open closed superstring field theory and generalize the result to the case of unoriented strings.
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