Results 31 to 40 of about 3,171,566 (182)

Critical phenomena in active matter [PDF]

Physical Review E, 2016
We investigate the effect of self-propulsion on a mean-field order-disorder transition. Starting from a $ ^4$ scalar field theory subject to an exponentially correlated noise, we exploit the Unified Colored Noise Approximation to map the non-equilibrium active dynamics onto an effective equilibrium one.
Paoluzzi, M., Maggi, C., Marconi, U. Marini Bettolo, Gnan, N.   +3 more
openaire   +7 more sources

Entropy production and fluctuation theorems for active matter [PDF]

, 2017
Active biological systems reside far from equilibrium, dissipating heat even in their steady state, thus requiring an extension of conventional equilibrium thermodynamics and statistical mechanics.
DeWeese, Michael R., Klymko, Katherine, Mandal, Dibyendu   +2 more
core   +2 more sources

Irreversibility, heat and information flows induced by non-reciprocal interactions

New Journal of Physics, 2020
We study the thermodynamic properties induced by non-reciprocal interactions between stochastic degrees of freedom in time- and space-continuous systems. We show that, under fairly general conditions, non-reciprocal coupling alone implies a steady energy
Sarah A M Loos, Sabine H L Klapp
doaj   +1 more source

Trapped in Out-of-Equilibrium Stationary State: Hot Brownian Motion in Optically Trapped Upconverting Nanoparticles

Frontiers in Physics, 2020
Upconverting nanoparticles typically absorb low frequency radiation and emit at higher frequencies relying upon multiphoton processes. One such type of particle is NaYF4:Yb,Er, which absorbs at 975 nm while emitting in visible radiation.
Sumeet Kumar, Amrendra Kumar, M. Gunaseelan, Rahul Vaippully, Dipanjan Chakraborty, Jayaraman Senthilselvan, Basudev Roy   +6 more
doaj   +1 more source

Dynamics of topological defects in the noisy Kuramoto model in two dimensions

Frontiers in Physics, 2022
We consider the two-dimensional (2D) noisy Kuramoto model of synchronization with short-range coupling and a Gaussian distribution of intrinsic frequencies, and investigate its ordering dynamics following a quench. We consider both underdamped (inertial)
Ylann Rouzaire, Ylann Rouzaire, Ylann Rouzaire, Demian Levis, Demian Levis   +4 more
doaj   +1 more source

The masses of active neutrinos in the nuMSM from X-ray astronomy [PDF]

, 2006
In an extention of the Standard Model by three relatively light right-handed neutrinos (the nuMSM model) the role of the dark matter particle is played by the lightest sterile neutrino.
A. Boyarsky, A. D. Dolgov, A. Kusenko, A. Neronov, A. Strumia, D. N. C. Lin, E. K. Akhmedov, K. Abazajian, M. Shaposhnikov, O. Ruchayskiy, P. B. Pal, P. Minkowski, S. Dodelson, S. H. Hansen, S. Tremaine, T. Asaka, T. Asaka, V. D. Barger, X. Shi   +18 more
core   +3 more sources

Braiding Dynamics in Active Nematics

Frontiers in Physics, 2022
In active matter systems, energy consumed at the small scale by individual agents gives rise to emergent flows at large scales. For 2D active nematic microtubule (ANMT) systems, these flows are largely characterized by the dynamics of mobile defects in ...
Spencer Ambrose Smith, Ruozhen Gong
doaj   +1 more source

Effective temperature of active matter

, 2011
We follow the dynamics of an ensemble of interacting self-propelled motorized particles in contact with an equilibrated thermal bath. We find that the fluctuation-dissipation relation allows for the definition of an effective temperature that is ...
B. Alberts, Davide Loi, K. Binder, L. F. Cugliandolo, Leticia F. Cugliandolo, M. P. Allen, Stefano Mossa   +6 more
core   +1 more source

High-energy neutrino conversion and the lepton asymmetry in the universe [PDF]

, 2001
We study matter effects on oscillations of high-energy neutrinos in the Universe. Substantial effect can be produced by scattering of the neutrinos from cosmological sources ($z\gta 1$) on the relic neutrino background, provided that the latter has large
A. Abbasabadi, A. Abbasabadi, A. Balbi, A. E. Lange, A. Yu. Smirnov, C. Lunardini, C. Lunardini, D. A. Dicus, D. A. Dicus, D. Fargion, D. Notzold, D. W. Hogg, E. Roulet, E. Waxman, E. Waxman, F. Halzen, F. W. Stecker, G. B. Larsen, G. G. Raffelt, G. Gelmini, G. Gelmini, G. Raffelt, G. Sigl, H. Athar, H. Athar, H. Athar, H. J. M. S. Mao, H. Kang, J. Alvarez-Muniz, J. G. Learned, J. J. Blanco-Pillado, J. L. Crooks, J. Lesgourgues, J. Lesgourgues, J. N. Bahcall, J. Pantaleone, J. Pantaleone, K. Enqvist, L. Bento, L. Stodolsky, M. C. Gonzalez-Garcia, M. J. S. Levine, M. Krumholz, M. Schmidt, P. Bhattacharjee, P. Bhattacharjee, P. Bhattacharjee, P. de Bernardis, R. J. Protheroe, S. Dodelson, S. Esposito, S. Esposito, S. Hanany, S. Hannestad, S. I. Dutta, S. Samuel, S. Samuel, T. J. Weiler, V. A. Kostelecky, V. A. Kostelecky, V. A. Kostelecky, V. A. Kostelecky, V. K. Cung, W. H. Kinney, X. Shi   +64 more
core   +2 more sources

A Drop of Active Matter

, 2012
We study theoretically the hydrodynamics of a fluid drop containing oriented filaments endowed with active contractile or extensile stresses and placed on a solid surface.
DeGennes, Hernandez-Ortiz, Jean-François Joanny, Simha, Sriram Ramaswamy   +4 more
core   +1 more source