Verley, Gatien

Two different Markov jump processes driven out of equilibrium by constant thermodynamic forces may have identical current fluctuations in the stationary state. The concept of equivalence classes emerges from this statement as proposed by Andrieux for discrete-time Markov chains on simple graphs. We define equivalence classes in the context of conti...

Madsen Houlrik, Jens Rousseaux, Germain

Based on the concept of geometric duality, we argue that uniform synchrony provides non-causal time by symmetric extension. Galilean particle aberration and Doppler effect c → ∞ coexists with conventional time and wave aberration in the Carrollian limit c → 0. Linear canonical dispersion implies internal energy E0 = mc 2 , where antiparticles are s...

Méry, A. Fléchard, X. Guillous, S. Kumar, V. Lalande, M. Rangama, J. Wolff, W. Cassimi, A.

The fragmentation of carbon monoxide dimers induced by collisions with low energy Ar$^{9+}$ ions is investigated using the COLTRIMS technique. The presence of a neighbor molecule in the dimer serves here as a diagnostic tool to probe the lifetimes of the $\rm CO^{2+}$ molecular dications resulting from the collision. The existence of metastable sta...

Patil, Pranay Alet, Fabien Capponi, Sylvain Mambrini, Matthieu

We consider a model Hamiltonian with two SU(4) fermions per site on a square lattice, showing a competition between bilinear and biquadratic interactions. This model has generated interest due to possible realizations in ultracold atom experiments and existence of spin liquid ground states. Using a basis transformation, we show that part of the pha...

Tremblin, P. Chabrier, G. Padioleau, T. Daley-Yates, S.

Inspired by the statistical mechanics of an ensemble of interacting particles (BBGKY hierarchy), we propose to account for small-scale inhomogeneities in self-gravitating astrophysical fluids by deriving a non-ideal Virial theorem and non-ideal Navier-Stokes equations using a decomposition of the gravitational force into a near- and far-field compo...

Gong, Zongping Nahum, Adam Piroli, Lorenzo

In two-dimensional Floquet systems, many-body localized dynamics in the bulk may give rise to a chaotic evolution at the one-dimensional edges that is characterized by a nonzero chiral topological index. Such anomalous dynamics is qualitatively different from local-Hamiltonian evolution. Here we show how the presence of a nonzero index affects enta...

Chowdhury, Debanjan Georges, Antoine Parcollet, Olivier Sachdev, Subir

We present a review of the Sachdev-Ye-Kitaev (SYK) model of compressible quantum many-body systems without quasiparticle excitations, and its connections to various theoretical studies of non-Fermi liquids in condensed matter physics. The review is placed in the context of numerous experimental observations on correlated electron materials. Strong ...

Houchati, Mohamed Ikbal Midouni, Adnene Yahya, Mondher Chniba-Boudjada, Nassira Bardeau, Jean-François Hamzaoui, Ahmed Hichem

International audience

Begun, A. M. Chernodub, M. N. Molochkov, A. V.

We discuss the phase diagram and properties of global vortices in the non-Hermitian parity-time-symmetric relativistic model possessing two interacting scalar complex fields. The phase diagram contains stable PT-symmetric regions and unstable PT-broken regions, which intertwine nontrivially with the U(1)-symmetric and U(1)-broken phases, thus formi...

Tchoumakov, Serguei Florens, Serge

Bootstrap methods, initially developed for solving statistical and quantum field theories, have recently been shown to capture the discrete spectrum of quantum mechanical problems, such as the single particle Schrödinger equation with an anharmonic potential. The core of bootstrap methods builds on exact recursion relations of arbitrary moments of ...