Independent domains of disoriented chiral condensate

Zhang, Q. H.; Li, X. Q.

doi:10.1103/physrevd.55.7302

Cited by 6 publications

(6 citation statements)

References 12 publications

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“…The increase in strength value with increase in number of domains is because the multiresolution event-by-event analysis based on the DWT method has been able to pick up signals by looking at bin to bin (in φ) fluctuations in each event. It is worth emphasizing that this result is not in contradiction with the theoretical considerations described above [159,160]. Indeed, if the multiple DCC domains formed in the initial stages, in the course of their evolution, move towards the same part of phase space covered by a detector, then the strength of the signal will reduce.…”

Section: Multiple Domains Of DCCsupporting

confidence: 62%

Disoriented chiral condensate: Theory and experiment

Mohanty

Serreau

2005

Physics Reports

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It is thought that a region of pseudo-vacuum, where the chiral order parameter is misaligned from its vacuum orientation in isospin space, might occasionally form in high energy hadronic or nuclear collisions. The possible detection of such disoriented chiral condensate (DCC) would provide useful information about the chiral structure of the QCD vacuum and/or the chiral phase transition of strong interactions at high temperature. We review the theoretical developments concerning the possible DCC formation in high-energy collisions as well as the various experimental searches that have been performed so far. We discuss future prospects for upcoming DCC searches, e.g. in high-energy heavy-ion collision experiments at RHIC and LHC.

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Section: Multiple Domains Of DCCsupporting

confidence: 62%

Disoriented chiral condensate: Theory and experiment

Mohanty

Serreau

2005

Physics Reports

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“…This result is not in contradiction with earlier theoretical observations 37,38 . If the multiple DCC domains formed in the initial stages, in the course of their evolution, move towards the same part of phase space covered by a detector, then the strength of the signal will reduce.…”

Section: Effect Of Multiple Domains Of DCCsupporting

confidence: 61%

“…This makes the dis-entanglement of DCC signal from that of normal events difficult. Subsequent calculations 38 suggest that the situation is better for multiple domains provided one of the domains is predominant.…”

Section: Effect Of Multiple Domains Of DCCmentioning

confidence: 99%

Search for DCC in Relativistic Heavy-Ion Collisions: Possibilities and Limitations

Mohanty

Nayak

Viyogi

et al. 2004

Int. J. Mod. Phys. A

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The experimental observation of disoriented chiral condensate is affected due to various physical and detector related effects. We study and quantify the strength of the experimental signal, "neutral pion fraction" within the framework of a simple DCC model, using the analysis methods based on the multi-resolution discrete wavelet technique and by evaluating the signal to background ratio. The scope and limitations of DCC search in heavy-ion collision experiments using various combination of detector systems are investigated.

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“…Barnas [24] analyzed theoretically the spin-wave spectrum of infinite, semi-infinite, and finite ferromagnetic superlattices with arbitrary elementary units by method of the transfer-matrix formalism. The spin-wave spectra of three-and four-layer superlattices and three-and four-sublattices were studied analytically, by using the bosonisation Holstein-Primakoff transformation in the linear spin-wave approximation and the Bogoliubov transformation [25,26] or a simple unitary transformation [27,28]. In our previous work [31], the magnon energy band was studied for a ferrimagnetic superlattice with three layers in a unit cell.…”

Section: Introductionmentioning

confidence: 99%

Magnon energy gap in a three‐layer ferromagnetic superlattice

Qiu

Zhang

Han

et al. 2007

Physica Status Solidi (b)

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The magnon energy band in a three-layer ferromagnetic superlattice is studied by using the linear spinwave approach and Green's function technique. It is found that two modulated energy gaps exist in the magnon energy band along K x direction perpendicular to the plane of the superlattice. The spin quantum numbers and the interlayer exchange couplings all affect the two energy gaps. The disappearance of one of the energy gaps corresponds to a high symmetry among the interlayer exchange couplings, while the vanishing of another energy gap corresponds to a high symmetry of the system, which belongs to the type III Shubnikov group or the polychromatic group of magnetic group. This magnetically structural symmetry includes not only the symmetry of crystallographic point-groups or space-groups, but also the symmetry of strength and direction of spins. Comparing with the previous results for a three-layer ferrimagnetic superlattice, it is concluded that the energy gap of the ferromagnetic/ferrimagnetic superlattices is dominated by different symmetries originated from ferromagnetic/antiferromagnetic interlayer exchange couplings.

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Independent domains of disoriented chiral condensate

Cited by 6 publications

References 12 publications

Disoriented chiral condensate: Theory and experiment

Disoriented chiral condensate: Theory and experiment

Search for DCC in Relativistic Heavy-Ion Collisions: Possibilities and Limitations

Magnon energy gap in a three‐layer ferromagnetic superlattice

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