6th International Conference on New Frontiers in Physics (ICNFP2017)

Session

Workshop on (Super)gravity, String theory and Related Topics

28 Aug 2017, 11:00

Conveners

Workshop on (Super)gravity, String theory and Related Topics: Session 2

• There are no conveners in this block

Workshop on (Super)gravity, String theory and Related Topics

• Augusto Sagnotti (Scuola Normale Superiore and INFN-Sezione di Pisa (IT))

Workshop on (Super)gravity, String theory and Related Topics

• Augusto Sagnotti (Scuola Normale Superiore and INFN-Sezione di Pisa (IT))

Workshop on (Super)gravity, String theory and Related Topics

• Augusto Sagnotti (Scuola Normale Superiore and INFN-Sezione di Pisa (IT))

Workshop on (Super)gravity, String theory and Related Topics

• Augusto Sagnotti (Scuola Normale Superiore and INFN-Sezione di Pisa (IT))

Workshop on (Super)gravity, String theory and Related Topics

• Augusto Sagnotti (Scuola Normale Superiore and INFN-Sezione di Pisa (IT))

Workshop on (Super)gravity, String theory and Related Topics

• Augusto Sagnotti (Scuola Normale Superiore and INFN-Sezione di Pisa (IT))

1535. Introduction

Augusto Sagnotti (Scuola Normale Superiore and INFN-Sezione di Pisa (IT))

28/08/2017, 11:00

Workshop on Supergravity, Strings and Related Matters

Talk

1395. Non-perturbative Gauge-Higgs Unification

Nikos Irges (NTUA)

28/08/2017, 11:10

A High Energy Particle Physics:

Talk

We describe a way to generate a 4d Higgs mechanism from a 5d pure gauge theory without a compact extra dimension or fermions. The analysis is necessarily non-perturbative and thus new, since the quantum behaviour of higher dimensional gauge theories is very little understood.

1489. Supergravity solutions from the double copy

Dr Silvia Nagy

28/08/2017, 11:55

Workshop on Supergravity, Strings and Related Matters

Talk

The idea that gravity (with or without supersymmetry) can be written as a double copy of Yang-Mills theories has become an established framework for understanding scattering amplitudes in gravitational theories.

I will describe two newer directions of research springing from this idea. One is that gravitational solutions (such as black holes) can be constructed directly from the simpler...

1524. Exotic branes and non-geometric fluxes in string theory

Fabio Riccioni (INFN - National Institute for Nuclear Physics)

28/08/2017, 12:40

Workshop on Supergravity, Strings and Related Matters

Talk

We obtain a complete classification of the half-supersymmetric branes of IIA/IIB string theory compactified on tori based on non-perturbative dualities. Many of these branes are `exotic', in the sense that they do not arise from the dimensional reduction of branes in ten dimensions. We then consider a specific N=1 model in four dimensions with fluxes turned on, and we determine the subset of...

1528. Cosmology with PLANCK: exploring the early Universe via the CMB

Paolo Natoli (Università di Ferrara)

28/08/2017, 15:00

Workshop on Supergravity, Strings and Related Matters

Talk

I will discuss highlights from the latest PLANCK release and present the most stringent bounds to date on a widely accepted
cosmological picture. The ΛCDM model has withstood a large collection of tests at increasing precision over the last decade and gains, with the Planck results, further strength. At the same time, we see small quirks in the data that may or not hint to new Physics in the...

1512. Quantum aspects of 3D higher-spin gauge theories

Andrea Campoleoni

28/08/2017, 16:30

Workshop on Supergravity, Strings and Related Matters

Talk

Three-dimensional models are a particularly promising setup for the study of the quantisation of higher-spin gauge theories. One can take advantage both of the simplicity brought about by the absence of local degrees of freedom and of the tools of two-dimensional conformal field theory that can be introduced via holographic scenarios. After a brief review of the basic setup, we shall show how...

1522. Recent progress on M5-branes at singularities

Prof. Alessandro Tomasiello (Milan Bicocca University)

28/08/2017, 17:15

Workshop on Supergravity, Strings and Related Matters

Talk

The dynamics of M5-branes is one of the most mysterious aspects of string theory. Recently the issue was reconsidered from the point of view of 6d conformal field theory, also using techniques borrowed from F-theory and holography. Some surprising phenomena came to light regarding the behavior of M5s at singularities, such as the possibility of "fractionation" and the presence of a rich moduli...

1526. Anti-de Sitter gravity/fluid correspondence and its flat/Carrollean limit

Marios Petropoulos (Centre National de la Recherche Scientifique (CNRS))

28/08/2017, 18:00

Workshop on Supergravity, Strings and Related Matters

Talk

I will discuss the reconstruction of exact four-dimensional Einstein (asymptotically anti-de Sitter) spacetimes from boundary data consisting of the three-dimensional spacetime boundary metric and the second fundamental form playing the role of energy-momentum tensor. To this end, the data must be appropriately tuned and the way to proceed is inspired from gravitational self-duality. The...

1532. String Theory and the Omega Background

Carlo Angelantonj (Universita e INFN Torino (IT))

29/08/2017, 09:00

Workshop on Supergravity, Strings and Related Matters

Talk

The Omega background is a deformation of Euclidean space-time that allows exact and explicit computations in four-dimensional N=2 gauge theories. Its extension to String Theory has been quite elusive so far, and only partial results have been obtained. In particular, it has been conjectured that it can be described in String Theory in terms of suitable topological amplitudes computed on flat...

1531. Non-Linear Supersymmetry and some Applications

Emilian Dudas (Ecole Polytechnique)

29/08/2017, 09:45

Workshop on Supergravity, Strings and Related Matters

Talk

I will review the recent progress in constructing non-linear realizations of supersymmetry using standard superspace techniques and constrained superfields, whose effects is to eliminate some field components from the spectrum. I will then proceed with some of their supergravity applications to Cosmology.

1530. On higher spin supertranslations and superrotations

Dario Francia (Scuola Normale Superiore)

29/08/2017, 11:00

Workshop on Supergravity, Strings and Related Matters

Talk

We study the large gauge transformations of massless higher-spin fields in four-dimensional Minkowski space. Suitable extensions of the Bondi gauge allow to identify an infinite-dimensional asymptotic symmetry algebra whose Ward identities imply Weinberg's soft theorem beyond spin two. We speculate on the possible role of these investigations as a tool to shed some light on the still...

1533. Corner contributions to holographic entanglement entropy in AdS4/BCFT3

Domenico Seminara (Physics Department)

29/08/2017, 11:45

Workshop on Supergravity, Strings and Related Matters

Talk

In the context of the AdS4/BCFT3 correspondence, where also the gravitational spacetime is bounded by a hypersurface which encodes the boundary conditions characterising the dual BCFT3, we study the holographic entanglement entropy of spatial regions with corners, whose vertices are located on the boundary of the BCFT3. The case where the boundary of the BCFT3 is a flat hyperplane is...

1534. Primordial Inflation and Power Spectra

Tsamis Nikolaos

29/08/2017, 12:30

Workshop on Supergravity, Strings and Related Matters

Talk

After an introduction to primordial inflation and de Sitter physics we present a formalism which allows to compute primordial power spectra for non-constant geometries analytically and we obtain interesting quantitative results.

1525. Using Numerical Relativity to explore Fundamental Physics and Astrophysics

Luciano Rezzolla (Institute for Theoretical Physics, Frankfurt, Germany)

29/08/2017, 15:00

Workshop on Supergravity, Strings and Related Matters

Talk

Recent years have seen a major progress in Numerical Relativity and the solution of the simplest and yet among the most challenging problems in classical General Relativity: the evolution of two objects interacting only gravitationally. I will review the results obtained so far when modelling binaries of black holes or of neutron stars and also discuss the impact these studies have in...

1556. Conclusion

Augusto Sagnotti (Scuola Normale Superiore and INFN-Sezione di Pisa (IT))

29/08/2017, 16:30

Workshop on Supergravity, Strings and Related Matters

Talk

1527. TBA

Anastasios Petkou (Unknown)

Workshop on Supergravity, Strings and Related Matters

Talk

TBA