Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Dutta, Sreedhar B."'
Autor:
Awasthi, Shakul, Dutta, Sreedhar B.
Periodically driven thermodynamic systems support stable non-equilibrium oscillating states with properties drastically different from equilibrium. They exhibit even more exotic features for low viscous drives, which is a regime that is hard to probe
Externí odkaz:
http://arxiv.org/abs/2402.16512
Autor:
Awasthi, Shakul, Dutta, Sreedhar B.
We employ an appropriate perturbative scheme in the large viscous regime to study oscillating states in driven Langevin systems. We explicitly determine oscillating state distribution of under-damped Brownian particle subjected to thermal, viscous an
Externí odkaz:
http://arxiv.org/abs/2207.09773
Autor:
Awasthi, Shakul, Dutta, Sreedhar B.
Publikováno v:
Phys. Rev. E 103, 062143 (2021)
We investigate the asymptotic distributions of periodically driven anharmonic Langevin systems. Utilizing the underlying $SL_2$ symmetry of the Langevin dynamics, we develop a perturbative scheme in which the effect of periodic driving can be treated
Externí odkaz:
http://arxiv.org/abs/2102.01915
Autor:
Awasthi, Shakul, Dutta, Sreedhar B.
Publikováno v:
Phys. Rev. E 101, 042106 (2020)
Motivated to understand the asymptotic behavior of periodically driven thermodynamic systems, we study the prototypical example of Brownian particle, overdamped and underdamped, in harmonic potentials subjected to periodic driving. The harmonic stren
Externí odkaz:
http://arxiv.org/abs/1911.03106
Publikováno v:
J. Stat. Mech. (2009) P03023
We analyse the spin-flip dynamics in kinetic Ising chains with Kimball-Deker-Haake (KDH) transition rates, and evaluate exactly the evolution of global quantities like magnetisation and its fluctuations, and the two-time susceptibilities and correlat
Externí odkaz:
http://arxiv.org/abs/0901.3428
Autor:
Dutta, Sreedhar B., Park, Su-Chan
Publikováno v:
Phys. Rev. E 83, 011117 (2011)
We study dynamic field theories for nonconserving $N$-vector models that are subject to spatial-anisotropic bias perturbations. We first investigate the conditions under which these field theories can have a single length scale. When N=2 or $N \ge 4$
Externí odkaz:
http://arxiv.org/abs/0812.0441
Autor:
Dutta, Sreedhar B.
Publikováno v:
J. Phys. A: Math. Theor. 41 (2008) 395002
The kinetics of the long-range spherical model evolving from various initial states is studied. In particular, the large-time auto-correlation and -response functions are obtained, for classes of long-range correlated initial states, and for magnetiz
Externí odkaz:
http://arxiv.org/abs/0806.3642
Publikováno v:
J.Phys.A40:7389-7410,2007
The kinetic spherical model with long-range interactions is studied after a quench to $T < T_c$ or to $T = T_c$. For the two-time response and correlation functions of the order-parameter as well as for composite fields such as the energy density, th
Externí odkaz:
http://arxiv.org/abs/cond-mat/0703445
Autor:
Dutta, Sreedhar B.
Publikováno v:
Phys.Rev.E 69, 066115 (2004)
We study the large-time behavior of a class of periodically driven macroscopic systems. We find, for a certain range of the parameters of either the system or the driving fields, the time-averaged asymptotic behavior effectively is that of certain ot
Externí odkaz:
http://arxiv.org/abs/cond-mat/0312027
Autor:
Dutta, Sreedhar B., Barma, Mustansir
Publikováno v:
Phys.Rev.E 67, 061111 (2003)
We study the large-time behaviour of Brownian particles moving through a viscous medium in a confined potential, and which are further subjected to position-dependent driving forces that are periodic in time. We focus on the case where these driving
Externí odkaz:
http://arxiv.org/abs/cond-mat/0301007