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Title: Off-equilibrium sphaleron transitions in the Glasma

Journal Article · · Physical Review D
 [1];  [2];  [3]
  1. Stony Brook Univ., Stony Brook, NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States); Univ. Heidelberg, Heidelberg (Germany)

We perform the first, to our knowledge, classical-statistical real time lattice simulations of topological transitions in the nonequilibrium glasma of weakly coupled but highly occupied gauge fields created immediately after the collision of ultrarelativistic nuclei. Simplifying our description by employing SU(2) gauge fields, and neglecting their longitudinal expansion, we find that the rate of topological transitions is initially strongly enhanced relative to the thermal sphaleron transition rate and decays with time during the thermalization process. Qualitative features of the time dependence of this nonequilibrium transition rate can be understood when expressed in terms of the magnetic screening length, which we also extract nonperturbatively. Furthermore, a detailed investigation of auto-correlation functions of the Chern-Simons number (NCS) reveals non-Markovian features of the evolution distinct from previous simulations of non-Abelian plasmas in thermal equilibrium.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
SC00112704; SC0012704; DEAC02-05CH11231
OSTI ID:
1295208
Alternate ID(s):
OSTI ID: 1249793
Report Number(s):
BNL-112396-2016-JA; R&D Project: KB0301020; KB0301020
Journal Information:
Physical Review D, Vol. 93, Issue 7; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 60 works
Citation information provided by
Web of Science

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Structure of longitudinal chromomagnetic fields in high energy collisions text January 2014
Approach to equilibrium in weakly coupled nonabelian plasmas text January 2014
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Sphalerons and Other Saddles from Cooling text January 1994
Topology of the SU(2) vacuum: a lattice study using improved cooling text January 1997
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Some Features of the Glasma text January 2006
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Cited By (21)

Quantitative Study of the CME Signal book August 2019
The Chiral Magnetic Effect in Pre-equilibrium Stage book August 2019
Status of the chiral magnetic effect and collisions of isobars journal June 2017
Quantifying the chiral magnetic effect from anomalous-viscous fluid dynamics journal January 2018
Prethermalization and universal dynamics in near-integrable quantum systems journal June 2016
Nonequilibrium study of the chiral magnetic effect from real-time simulations with dynamical fermions journal February 2017
Large- N kinetic theory for highly occupied systems journal June 2018
Rotating solutions of nonideal transverse Chern-Simons magnetohydrodynamics journal October 2018
Universal Self-Similar Scaling of Spatial Wilson Loops Out of Equilibrium journal May 2017
Dynamical Topological Transitions in the Massive Schwinger Model with a θ Term journal February 2019
Magnetic fields in heavy ion collisions: flow and charge transport journal March 2020
Magnetic fields in heavy ion collisions: flow and charge transport text January 2020
Prethermalization and universal dynamics in near-integrable quantum systems text January 2016
Quantifying Chiral Magnetic Effect from Anomalous-Viscous Fluid Dynamics text January 2016
Non-equilibrium study of the Chiral Magnetic Effect from real-time simulations with dynamical fermions text January 2016
The chiral anomaly, Berry's phase and chiral kinetic theory, from world-lines in quantum field theory text January 2017
World-line construction of a covariant chiral kinetic theory text January 2017
Universal self-similar scaling of spatial Wilson loops out of equilibrium text January 2017
A New Correlator to Detect and Characterize the Chiral Magnetic Effect text January 2017
Dynamical topological transitions in the massive Schwinger model with a θ-term text January 2018
Magnetic fields in heavy ion collisions: flow and charge transport text January 2019

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