Skyrme models and nuclear matter equation of state

被引：32

作者：

Adam, C. ^{[1
,2
]}

Haberichter, M. ^{[3
]}

Wereszczynski, A. ^{[4
]}

机构：

[1] Univ Santiago de Compostela, Dept Fis Particulas, E-15782 Santiago De Compostela, Spain

[2] IGFAE, E-15782 Santiago De Compostela, Spain

[3] Univ Kent, Sch Math Stat & Actuarial Sci, Canterbury CT2 7NF, Kent, England

[4] Jagiellonian Univ, Inst Phys, Krakow, Poland

来源：

PHYSICAL REVIEW C | 2015年 / 92卷 / 05期

关键词：

BPS SKYRMIONS; STARS; SCATTERING; CRYSTALS; SOLITONS; MAPS;

D O I：

10.1103/PhysRevC.92.055807

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We investigate the role of pressure in a class of generalized Skyrme models. We introduce pressure as the trace of the spatial part of the energy-momentum tensor and show that it obeys the usual thermodynamical relation. Then, we compute analytically the mean-field equation of state in the high-and medium-pressure regimes by applying topological bounds on compact domains. The equation of state is further investigated numerically for the charge-one Skyrmions. We identify which term in a generalized Skyrme model is responsible for which part in the equation of state. Further, we compare our findings with the corresponding results in the Walecka model.

引用

页数：17

共 67 条

[1] Neutron stars in the Bogomol'nyi-Prasad-Sommerfield Skyrme model: Mean-field limit versus full field theory [J].

Adam, C. ;

Naya, C. ;

Sanchez-Guillen, J. ;

Vazquez, R. ;

Wereszczynski, A. .

PHYSICAL REVIEW C, 2015, 92 (02)

[2] Baryon chemical potential and in-medium properties of BPS skyrmions [J].

Adam, C. ;

Klaehn, T. ;

Naya, C. ;

Sanchez-Guillen, J. ;

Vazquez, R. ;

Wereszczynski, A. .

PHYSICAL REVIEW D, 2015, 91 (12)

[3] BPS Skyrmions as neutron stars [J].

Adam, C. ;

Naya, C. ;

Sanchez-Guillen, J. ;

Vazquez, R. ;

Wereszczynski, A. .

PHYSICS LETTERS B, 2015, 742 :136-142

[4] Thermodynamics of the BPS Skyrme model [J].

Adam, C. ;

Naya, C. ;

Sanchez-Guillen, J. ;

Speight, J. M. ;

Wereszczynski, A. .

PHYSICAL REVIEW D, 2014, 90 (04)

[5] Topological energy bounds in generalized Skyrme models [J].

Adam, C. ;

Wereszczynski, A. .

PHYSICAL REVIEW D, 2014, 89 (06)

[6] Bogomol'nyi-Prasad-Sommerfield Skyrme Model and Nuclear Binding Energies [J].

Adam, C. ;

Naya, C. ;

Sanchez-Guillen, J. ;

Wereszczynski, A. .

PHYSICAL REVIEW LETTERS, 2013, 111 (23)

[7] BPS Skyrme model and baryons at large Nc [J].

Adam, C. ;

Sanchez-Guillen, J. ;

Wereszczynski, A. .

PHYSICAL REVIEW D, 2010, 82 (08)

[8] THE SKYRME MODEL WITH PION MASSES [J].

ADKINS, GS ;

NAPPI, CR .

NUCLEAR PHYSICS B, 1984, 233 (01) :109-115

[9] Baryons as chiral solitons in the Nambu-Jona-Lasinio model [J].

Alkofer, R ;

Reinhardt, H ;

Weigel, H .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1996, 265 (03) :139-252

[10]

ASCHER U, 1981, ACM T MATH SOFTWARE, V7, P209, DOI 10.1145/355945.355950

← 1 2 3 4 5 6 7 →