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Title: Effects of mode-mode and isospin-isospin correlations on domain formation of disoriented chiral condensates

Abstract

The effects of mode-mode and isospin-isospin correlations on nonequilibrium chiral dynamics are investigated by using the method of the time-dependent variational approach with squeezed states as trial states. Our numerical simulations show that large domains of the disoriented chiral condensate (DCC) are formed because of the combined effect of the mode-mode and isospin-isospin correlations. Moreover, it is found that, when the mode-mode correlation is included, the DCC domain formation is accompanied by the amplification of the quantum fluctuation, which implies the squeezing of the state. However, neither the DCC domain formation nor the amplification of the quantum fluctuation is observed if only the isospin-isospin correlation is included. This suggests that the mode-mode coupling plays a key role in the DCC domain formation.

Authors:
 [1];  [2];  [1];  [3]
  1. Department of Physics, Osaka University, Toyonaka 560-0043 (Japan)
  2. (RCNP), Osaka University, Ibaraki 567-0047 (Japan)
  3. Physics Division, Faculty of Science, Kochi University, Kochi 780-8520 (Japan)
Publication Date:
OSTI Identifier:
20771491
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 73; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevC.73.045212; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; BOSE-EINSTEIN CONDENSATION; CHIRALITY; COMPUTERIZED SIMULATION; CORRELATIONS; COUPLING; FLUCTUATIONS; HEAVY ION REACTIONS; ISOSPIN; PHASE TRANSFORMATIONS; TIME DEPENDENCE; VARIATIONAL METHODS

Citation Formats

Ikezi, N., Research Center for Nuclear Physics, Asakawa, M., and Tsue, Y. Effects of mode-mode and isospin-isospin correlations on domain formation of disoriented chiral condensates. United States: N. p., 2006. Web. doi:10.1103/PhysRevC.73.045212.
Ikezi, N., Research Center for Nuclear Physics, Asakawa, M., & Tsue, Y. Effects of mode-mode and isospin-isospin correlations on domain formation of disoriented chiral condensates. United States. doi:10.1103/PhysRevC.73.045212.
Ikezi, N., Research Center for Nuclear Physics, Asakawa, M., and Tsue, Y. Sat . "Effects of mode-mode and isospin-isospin correlations on domain formation of disoriented chiral condensates". United States. doi:10.1103/PhysRevC.73.045212.
@article{osti_20771491,
title = {Effects of mode-mode and isospin-isospin correlations on domain formation of disoriented chiral condensates},
author = {Ikezi, N. and Research Center for Nuclear Physics and Asakawa, M. and Tsue, Y.},
abstractNote = {The effects of mode-mode and isospin-isospin correlations on nonequilibrium chiral dynamics are investigated by using the method of the time-dependent variational approach with squeezed states as trial states. Our numerical simulations show that large domains of the disoriented chiral condensate (DCC) are formed because of the combined effect of the mode-mode and isospin-isospin correlations. Moreover, it is found that, when the mode-mode correlation is included, the DCC domain formation is accompanied by the amplification of the quantum fluctuation, which implies the squeezing of the state. However, neither the DCC domain formation nor the amplification of the quantum fluctuation is observed if only the isospin-isospin correlation is included. This suggests that the mode-mode coupling plays a key role in the DCC domain formation.},
doi = {10.1103/PhysRevC.73.045212},
journal = {Physical Review. C, Nuclear Physics},
number = 4,
volume = 73,
place = {United States},
year = {Sat Apr 15 00:00:00 EDT 2006},
month = {Sat Apr 15 00:00:00 EDT 2006}
}