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Cited by 111High-Energy Particle Collisions ResearchQuantum Chromodynamics and Particle InteractionsParticle physics theoretical and experimental studies

Can disoriented chiral condensates form? A dynamical perspective

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Boyanovsky, D., de Vega, H. J., Holman, R.·1995·Physical Review D
DOI 10.1103/physrevd.51.734
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Abstract

We address the issue of whether a region of disoriented chiral condensate (DCC), in which the chiral condensate has components along the pion directions, can form. We consider a system going through the chiral phase transition via a quench, in which relaxation of the high temperature phase to the low temperature one occurs rapidly (within a time scale of order \ensuremath{\sim}1 fm/c). We use a density matrix based formalism that takes both thermal and quantum fluctuations into account nonperturbatively to argue that if the O(4) linear \ensuremath{\sigma} model is the correct way to model the situation in QCD, then it is very unlikely, at least in the Hartree approximation, that a large (>10 fm) DCC region will form. Typical sizes of such regions are \ensuremath{\sim}1--2 fm and the density of pions in such regions is at most of order \ensuremath{\sim}0.2/${\mathrm{fm}}^{3}$. We end with some speculations on how large DCC regions may be formed.

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  • A remarkable result from RHIC experiments is that ideal hydrodynamic calculations of v2 are in excellent agreement with the combined experimental results from STAR and PHENIX for many hadron species, up to p_T ∼ 2 GeV.

    “A remarkable result from RHIC experiments is that ideal hydrodynamic calculations of v 2 are in excellent agreement with the combined experimental results from STAR[147] and PHENIX[148] for a many hadron species, up to p T ∼ 2 GeV as shown in fig. 16.”

    From Phase Transitions in the Early and Present Universe (2006) · cites this paper as [148]

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Authors
Boyanovsky, D., de Vega, H. J., & Holman, R.
Affiliations
University of Pittsburgh (US)
ORCID
Venue
Physical Review D
Publisher
American Physical Society (APS)
Published
1995-01-15
Volume
51
Issue
2
Pages
734-747
ISSN
0556-2821 (ISSN-L)
DOI
10.1103/physrevd.51.734
OpenAlex
W2079140956
Cited by
111
References
28
Citations by year
2025: 1 · 2012: 1
FWCI
12.58
Type
journal article
Language
en
Open access
Licence
link.aps.org/licenses/aps-default-license (vor)
Locations
  • Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields (publishedVersion)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • CERN Document Server (European Organization for Nuclear Research) (submittedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › High-Energy Particle Collisions Research
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Quantum Chromodynamics and Particle Interactions
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Particle physics theoretical and experimental studies
Keywords
disoriented chiral condensate, chiral phase transition, quenching, Hartree approximation, thermal fluctuations, quantum fluctuations, QCD, chiral condensate

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