Skyrmions at finite temperature

Dey, Jishnu; Eisenberg, J.M.

doi:10.1016/0370-2693(94)90690-4

Cited by 7 publications

(9 citation statements)

References 31 publications

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“…Hence, although in the earlier case [14] the effective mass is identical to the free nucleon mass at zero density and nonzero temperatures before the phase transition takes place, M * N in our calculations has a higher value as compared to the nucleon mass in vacuum. A similar increase was also observed earlier for the N and ∆ masses for nonzero temperatures using the thermal skyrmions [16].…”

Section: Resultssupporting

confidence: 88%

Hot nuclear matter in the quark meson coupling model

et al. 1997

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We study here hot nuclear matter in the quark meson coupling model which incorporates explicitly quark degrees of freedom, with quarks coupled to scalar and vector mesons. The equation of state of nuclear matter including the composite nature of the nucleons is calculated at finite temperatures. The calculations are done taking into account the medium-dependent bag constant. Nucleon properties at finite temperatures as calculated here are found to be appreciably different from the value at Tϭ0. ͓S0556-2813͑97͒03512-7͔

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Section: Resultssupporting

confidence: 88%

Hot nuclear matter in the quark meson coupling model

et al. 1997

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“…A similar behaviour is also predicted with the MQMC model [14]. Such an effect is also encountered using the thermal skyrmion [25] where a baryon shrinks with temperature. We have also calculated the effective mass of the nucleon as a function of density at different temperatures for the QMC and the MQMC models.…”

Section: Resultssupporting

confidence: 77%

Warm asymmetric matter in the quark-meson coupling model

et al. 2003

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In this work we study the warm equation of state of asymmetric nuclear matter in the quark-meson coupling model which incorporates explicitly quark degrees of freedom, with quarks coupled to scalar, vector, and isovector mesons. Mechanical and chemical instabilities are discussed as a function of density and isospin asymmetry. The binodal section, essential in the study of the liquid-gas phase transition is also constructed and discussed. The main results for the equation of state are compared with two common parametrizations used in the nonlinear Walecka model and the differences are outlined.

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“…Indeed, Figs 2,3 demonstrate that the holonomy of the axially symmetric charge n Yang-Mills calorons and charge −n anticalorons yields a good approximation to the charge ±2n Skyrmion-antiSkyrmion (S-A) pair and to the ±2n Skyrmion-antiSkyrmion-Skyrmion (S-A-S) configuration. Furthermore, such a good agreement was observed for all components of the Skyrme field (7). This result is not very surprising because it is known that the the Skyrmion-antiSkyrmion chains may exist only for value of charge n ≥ 2 [12,13].…”

Section: Skyrmion-antiskyrmion Chains From Caloronssupporting

confidence: 70%

“…This method can be extended to set a similar link between Skyrmions and calorons which are periodic instantons at finite temperature [6,7]. Recently the caloron generated field on S 1 × R 3 was used to construct axially symmetric Skyrmion chains [8], in this approach the periodicity of a chain of Skyrmions matches the period of the gauge field.…”

Section: Introductionmentioning

confidence: 99%

Sphaleron solutions of the Skyrme model from Yang–Mills holonomy

Shnir

Zhilin

2013

Physics Letters B

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We discuss how an approximation to the axially symmetric sphalerons in the Skyrme model can be constructed from the holonomy of a non-BPS Yang-Mills calorons. These configurations, both in the Skyrme model and in the Euclidean Yang-Mills theory, are characterized by two integers n and m, where ±n are the winding numbers of the constituents and the second integer m defines type of the solution, it has zero topological charge for even m and for odd values of m the corresponding chain has topological charge n. It is found numerically that the holonomy of the chains of interpolating calorons-anticalorons provides a reasonably good approximation to the corresponding Skyrmion-antiSkyrmion chains when the topological charge of the Skyrmion constitutents is two times more than the Chern-Pontryagin index of the caloron.

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Skyrmions at finite temperature

Cited by 7 publications

References 31 publications

Hot nuclear matter in the quark meson coupling model

Hot nuclear matter in the quark meson coupling model

Warm asymmetric matter in the quark-meson coupling model

Sphaleron solutions of the Skyrme model from Yang–Mills holonomy

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