SM&FT 2015 - The XVI Workshop on Statistical Mechanics and nonpertubative Field Theory

Session

Session 7

Dec 11, 2015, 9:00 AM

Dipartimento di Fisica, Univ. Bari - INFN Sezione di Bari

Conveners

Session 7

• Sebastiano Stramaglia (BA)

47. Turbulence on a Fractal Fourier set

Alessandra S. Lanotte (LE)

12/11/15, 9:00 AM

The dynamical effects of mode reduction in Fourier space for three dimensional turbulent flows is studied. We present fully resolved numerical simulations of the Navier-Stokes equations with Fourier modes constrained to live on a fractal set of dimension D. The robustness of the energy cascade and vortex stretching mechanisms are tested at changing D, from the standard three dimensional...

14. Active dumbbells: from diffusion properties to aggregation phenomena

Dr Alessandro Mossa (FI)

12/11/15, 9:20 AM

In the last two decades active matter has been the object of a surge of theoretical and experimental interest. Apart from the obvious biological relevance, theorists are also specially attracted by the inherently non-equilibrium nature of self-propulsion phenomena. After a quick overview of the theoretical models and experimental systems that are currently under the spotlight, this talk will...

28. Quench Dynamics in Two-Dimensional Integrable SUSY Models

Axel Cortes Cubero (T)

12/11/15, 9:40 AM

We analyse quench processes in two dimensional quantum field theories with infinite number of conservation laws which also include fermionic charges that close a $N=1$ supersymmetric algebra. While in general the quench protocol induces a breaking of supersymmetry, we show that there are particular initial states which ensure the persistence of supersymmetry also for the dynamics out of...

34. Infinite order phase transitions in two-dimensional U(N) and SU(N) spin models.

Volodymyr Chelnokov (Bogolyubov Institute for Theoretical Physics of the National Academy of Sciences of Ukraine)

12/11/15, 10:00 AM

Two dimensional U(N) and SU(N) spin models are studied both analytically and numerically to establish the existence of BKT-like phase transitions. In U(N) case a BKT phase transition is found for any value of N. In SU(N) case two BKT-like transitions appear in the model with an adjoint interaction term, if it is large enough, though in the model without the adjoint term only a first order...

30. Hagedorn spectrum in pure Yang-Mills theories on the lattice

Alessandro Nada (TO)

12/11/15, 10:20 AM

We present a novel set of high-precision lattice results for the equation of state of the SU(2) pure Yang-Mills theory in the confining phase. The prediction of a gas of non-interacting, massive glueballs yields a remarkable description of lattice data, provided that a bosonic closed string model is used to derive an exponentially growing Hagedorn spectrum for heavy glueball states. This...

3. Thermal fluctuations in a kinetic model for multicomponent fluids

Dr Daniele Belardinelli (Università di Roma, Tor Vergata)

12/11/15, 10:40 AM

Thermal fluctuations and non-ideal multicomponent effects are important ingredients for a proper mesoscale description of a wide variety of flows in soft matter and biological physics [1, 2, 3]. Theoretically, thermally fluctuating mesoscopic flows are most conveniently dealt within the framework of fluctuating hydrodynamics [4]. An important ingredient in this formulation is the...