Holographic Thermalization with Chemical Potential

May, 2012
49 pages
Published in:
  • JHEP 09 (2012) 055
e-Print:
Report number:
  • UTTG-05-12,
  • NSF-KITP-12-060

Citations per year

2012201520182021202305101520
Abstract: (arXiv)
We study the thermalization of a strongly coupled quantum field theory in the presence of a chemical potential. More precisely, using the holographic prescription, we calculate non- local operators such as two point function, Wilson loop and entanglement entropy in a time- dependent background that interpolates between AdSd+1 and AdSd+1 -Reissner-Nordstr\"om for d = 3, 4. We find that it is the entanglement entropy that thermalizes the latest and thus sets a time-scale for equilibration in the field theory. We study the dependence of the thermalization time on the probe length and the chemical potential. We find an interesting non-monotonic behavior. For a fixed small value of T l and small values of \mu/T the thermalization time decreases as we increase \mu/T, thus the plasma thermalizes faster. For large values of \mu/T the dependence changes and the thermalization time increases with increasing \mu/T . On the other hand, if we increase the value of T l this non-monotonic behavior becomes less pronounced and eventually disappears indicating two different regimes for the physics of thermalization: non-monotonic dependence of the thermalization time on the chemical potential for T l << 1 and monotonic for T l >> 1.
Note:
  • 49 pages, v2 references added, typo corrected
  • potential: chemical
  • entropy: entanglement
  • background: time dependence
  • operator: local
  • two-point function
  • strong coupling
  • Wilson loop
  • holography
  • plasma
  • temperature