# Nonequilibrium Chiral Dynamics and Two-Particle Correlations in the Time-Dependent Variational Approach with Squeezed States

## Abstract

We study the dynamics of chiral phase transition in the O(4) linear sigma model by using the time-dependent variational approach with squeezed states. Our numerical simulations show that large domains of the disoriented chiral condensate (DCC) are formed through the mode-mode correlation. We also present a result of an analysis of the two-particle correlation function for the pion fields, which reflects unique nature of the squeezed states. In particular, we will show that the chaoticity parameter is not close to zero even if DCC domains are produced.

- Authors:

- Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki 567-0047 (Japan)
- Department of Physics, Osaka University, Toyonaka 560-0043 (Japan)
- Physics Division, Faculty of Science, Kochi University, Kochi 780-8520 (Japan)

- Publication Date:

- OSTI Identifier:
- 20800150

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: AIP Conference Proceedings; Journal Volume: 828; Journal Issue: 1; Conference: 35. internationals symposium on multiparticle dynamics; Workshop on particle correlations and femtoscopy, Kromeriz (Czech Republic), 9-17 Aug 2005; Other Information: DOI: 10.1063/1.2197481; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CHIRAL SYMMETRY; CHIRALITY; COMPUTERIZED SIMULATION; CORRELATION FUNCTIONS; CORRELATIONS; PHASE TRANSFORMATIONS; PIONS; SIGMA MODEL; TIME DEPENDENCE; VARIATIONAL METHODS

### Citation Formats

```
Ikezi, N., Asakawa, M., and Tsue, Y..
```*Nonequilibrium Chiral Dynamics and Two-Particle Correlations in the Time-Dependent Variational Approach with Squeezed States*. United States: N. p., 2006.
Web. doi:10.1063/1.2197481.

```
Ikezi, N., Asakawa, M., & Tsue, Y..
```*Nonequilibrium Chiral Dynamics and Two-Particle Correlations in the Time-Dependent Variational Approach with Squeezed States*. United States. doi:10.1063/1.2197481.

```
Ikezi, N., Asakawa, M., and Tsue, Y.. Tue .
"Nonequilibrium Chiral Dynamics and Two-Particle Correlations in the Time-Dependent Variational Approach with Squeezed States". United States.
doi:10.1063/1.2197481.
```

```
@article{osti_20800150,
```

title = {Nonequilibrium Chiral Dynamics and Two-Particle Correlations in the Time-Dependent Variational Approach with Squeezed States},

author = {Ikezi, N. and Asakawa, M. and Tsue, Y.},

abstractNote = {We study the dynamics of chiral phase transition in the O(4) linear sigma model by using the time-dependent variational approach with squeezed states. Our numerical simulations show that large domains of the disoriented chiral condensate (DCC) are formed through the mode-mode correlation. We also present a result of an analysis of the two-particle correlation function for the pion fields, which reflects unique nature of the squeezed states. In particular, we will show that the chaoticity parameter is not close to zero even if DCC domains are produced.},

doi = {10.1063/1.2197481},

journal = {AIP Conference Proceedings},

number = 1,

volume = 828,

place = {United States},

year = {Tue Apr 11 00:00:00 EDT 2006},

month = {Tue Apr 11 00:00:00 EDT 2006}

}

DOI: 10.1063/1.2197481

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