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Dimitri Colferai (FI)18/05/2016, 10:50We derive the limiting form of graviton radiation in gravitational scattering at transplanckian energies ($E \gg M_P$) and small deflection angles. We show that --- owing to the graviton's spin 2 --- such limiting form unifies the soft- and Regge- regimes of emission, by covering a broad angular range, from forward fragmentation to deeply central region. The single-exchange emission...Go to contribution page
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Keisuke Ohashi (P)18/05/2016, 10:50We study the large-N solution of the bosonic CP(N-1) model on a finite interval with the Dirichlet conditions. In the literature, this model has been studied with translational invariant ansatz and there an existence of phase transition was found. We find that this translational invariant ansatz can not give a solution of the gap equation and divergence behavior appears around the...Go to contribution page
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Mr Eduardo Grossi (University of Florence & INFN Florence)18/05/2016, 11:10We show that the stress-energy tensor has additional terms with respect to the ideal form in states of global thermodynamic equilibrium in flat spacetime with non-vanishing acceleration and vorticity. These corrections are of quantum origin and their leading terms are second order in the gradients of the thermodynamic fields. Their relevant coefficients can be expressed in terms of correlators...Go to contribution page
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Remo Garattini (MI)18/05/2016, 11:10Even if a full and complete theory of Quantum Gravity and Quantum Cosmology is absent, the Wheeler-DeWitt equation appears as a natural instrument for the quantization of the gravitational field. In this context we setup a Sturm-Liouville problem with the cosmological constant considered as the associated eigenvalue. We will discuss the effects of some modifications of General Relativity, like...Go to contribution page
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Maria Cristina Diamantini (PG)18/05/2016, 11:30By establishing a relation between information erasure and continuous phase transitions we generalise the Landauer bound to analog computing systems. The entropy production per degree of freedom during erasure of an analog variable (reset to standard value) is given by the logarithm of the configurational volume measured in units of its minimal quantum. As a consequence every computation has...Go to contribution page
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Valentina Forini18/05/2016, 11:30String sigma-models relevant in AdS/CFT are highly non-trivial two-dimensional field theories whose perturbative analysis is being crucially used to verify various conjectures, among which their integrability. I will discuss how to address the extraction of information at finite values of the string effective tension via the use of lattice-based methods.Go to contribution page
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Mr Gabriele Martelloni (SISSA)18/05/2016, 11:50We continue the study of the Quench Action Method (QAM) for a recently considered geometrical quantum quench: two free fermionic chains initially separated by an hard wall and after put in contact and let evolve unitarily with a translation invariant Hamiltonian. Every time un unbalanced of energy, chemical potential or number of particles is present two different stationary regimes are...Go to contribution page
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Marco Caldarelli (Southampton University)18/05/2016, 11:50The AdS/Ricci-flat correspondence connects families of asymptotically AdS spacetimes to Ricci-flat spacetimes, and can be used to transfer tools and results between them. In its original formulation, this map requires a high degree of symmetry, limiting its possible applications. I will show how to extend the correspondence to a larger class of spacetimes, that includes for example general...Go to contribution page
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Roberto Auzzi (P)18/05/2016, 12:10Trace anomalies for non-relativistic Schrodinger theories coupled to a Newton-Cartan background metric will be discussed. If the causality condition is not imposed on the metric, an infinite number of anomaly terms is allowed and a type A anomaly is present. If we restrict to background metric sources which preserve causality, there exists just a type B anomaly. Moreover I will discuss work in...Go to contribution page
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Dr Vincenzo Alba (SISSA)18/05/2016, 12:10We consider the problem of constructing the stationary state following a quantum quench, using the exact overlaps for finite size integrable models. We focus on the isotropic Heisenberg spin chain with initial state N\'eel or Majumdar-Ghosh (dimer), although the proposed approach is valid for an arbitrary integrable model. We consider only eigenstates which do not contain zero-momentum strings...Go to contribution page
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Mr Himanshu Raj (SISSA)18/05/2016, 12:30We consider the coupling of a free scalar to a single-trace operator of a large N CFT in d dimensions. At leading order, the resulting RG-fow has a non-trivial fixed point where multiplets of the free scalar and the single trace operator recombine. We will show this phenomenon in field theory, and provide the dual holographic description. Free scalars correspond to singleton representations of...Go to contribution page
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Dr Giandomenico Palumbo (University of Utrecht)18/05/2016, 12:30In this talk, I propose a new model that supports two-dimensional topological phases. The tight-binding model defined on the Lieb lattice with three different species of fermions supports a single Dirac-like point in the momentum space. The dispersion relation around this point is fully relativistic and described by a Duffin-Kemmer-Petiau Hamiltonian. I show the presence of topologically...Go to contribution page
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