publications

Archive ouverte HAL – Exact Persistence Exponent for the 2 D -Diffusion Equation and Related Kac Polynomials

Mihail Poplavskyi 1 Gregory Schehr 2 Physical Review Letters, American Physical Society, 2018, 121 (15), 〈10.1103/PhysRevLett.121.150601〉 We compute the persistence for the $2d$-diffusion equation with random initial condition, i.e., the probability $p_0(t)$ that the diffusion field, at a given point ${\bf x}$ in the plane, has not changed sign up to time $t$. For large […]

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Archive ouverte HAL – Entanglement evolution and generalised hydrodynamics: noninteracting systems

Bruno BertiniMaurizio Fagotti 1 Lorenzo PiroliPasquale Calabrese J.Phys.A, 2018, 51 (39), pp.39LT01. 〈10.1088/1751-8121/aad82e〉 The large-scale properties of homogeneous states after quantum quenches in integrable systems have been successfully described by a semiclassical picture of moving quasiparticles. Here we consider the generalisation for the entanglement evolution after an inhomogeneous quench in noninteracting systems in the framework

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Archive ouverte HAL – Engineered Swift Equilibration for Brownian objects: from underdamped to overdamped dynamics

Marie Chupeau 1 Sergio Ciliberto 2 David Guéry-Odelin 3 Emmanuel Trizac 1 New Journal of Physics, Institute of Physics: Open Access Journals, 2018, 20 (7), pp.075003. 〈10.1088/1367-2630/aac875〉 We propose a general framework to study transformations that drive an underdamped Brownian particle in contact with a thermal bath from an equilibrium state to a new one

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Archive ouverte HAL – Energy of N two-dimensional bosons with zero-range interactions

Betzalel Bazak 1 Dmitry S. Petrov 2 New Journal of Physics, Institute of Physics: Open Access Journals, 2018, 20 (2), 〈10.1088/1367-2630/aaa64f〉 We derive an integral equation describing $N$ two-dimensional bosons with zero-range interactions and solve it for the ground state energy $B_N$ by applying a stochastic diffusion Monte Carlo scheme for up to 26 particles.

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Archive ouverte HAL – Emergent Chiral Spin State in the Mott Phase of a Bosonic Kane-Mele-Hubbard Model

Kirill Plekhanov 1, 2 Ivana Vasić 3 Alexandru Petrescu 4 Rajbir Nirwan 5 Guillaume Roux 2 Walter Hofstetter 5 Karyn Le Hur 1 Physical Review Letters, American Physical Society, 2018, 120 (15), 〈10.1103/PhysRevLett.120.157201〉 Recently, the frustrated XY model for spins-1/2 on the honeycomb lattice has attracted a lot of attention in relation with the possibility

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Archive ouverte HAL – Eigenstate versus Zeeman-based approaches to the solid effect

Inés Rodríguez-Arias 1 Alberto Rosso 1 Andrea De Luca 2 Magnetic Resonance in Chemistry, Wiley, 2018, 56 (7), pp.689 – 698. 〈10.1002/mrc.4724〉 The solid effect is one of the simplest and most effective mechanisms for Dynamic Nuclear Polarization. It involves the exchange of polarization between one electron and one nuclear spin coupled via the hyperfine

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Archive ouverte HAL – Eigenfunction distribution for the Rosenzweig-Porter model

E. Bogomolny 1 M. Sieber 2 Physical Review E , American Physical Society (APS), 2018, 98 (3), 〈10.1103/PhysRevE.98.032139〉 The statistical distribution of eigenfunctions for the Rosenzweig-Porter model is derived for the region where eigenfunctions have fractal behaviour. The result is based on simple physical ideas and leads to transparent explicit formulas which agree very well

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Archive ouverte HAL – Effects of refractory period on stochastic resetting

Martin R. Evans 1 Satya N. Majumdar 2 Journal of Physics A: Mathematical and Theoretical, IOP Publishing, 2018 We consider a stochastic process undergoing resetting after which a random refractory period is imposed. In this period the process is quiescent and remains at the resetting position. Using a first-renewal approach, we compute exactly the stationary

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Archive ouverte HAL – Dynamics of run-and-tumble particles in dense single-file systems

Thibault Bertrand 1 Pierre Illien 2 Olivier Benichou 2 Raphael Voituriez 3 Thibault Bertrand, Pierre Illien, Olivier Benichou, Raphael Voituriez. Dynamics of run-and-tumble particles in dense single-file systems. New Journal of Physics, Institute of Physics: Open Access Journals, 2018, 20 (11), pp.113045. ⟨10.1088/1367-2630/aaef6f⟩. ⟨hal-02408409⟩ 1. Department of Mechanical Engineering and Materials Science 2. LPTMC –

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Archive ouverte HAL – Duality in Power-Law Localization in Disordered One-Dimensional Systems

X. Deng 1 V. e. Kravtsov 2, 3 G. v. Shlyapnikov 4, 5, 6, 7, 8 L. Santos 1 Physical Review Letters, American Physical Society, 2018, 120 (11), 〈10.1103/PhysRevLett.120.110602〉 The transport of excitations between pinned particles in many physical systems may be mapped to single-particle models with power-law hopping, $1/r^a$. For randomly spaced particles, these models present

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