TY  - JOUR
AU  - Park, B. Y.
AU  - Paeng, W. G.
AU  - Vento, V.
PY  - 2019
DA  - 2019//
TI  - The inhomogeneous phase of dense skyrmion matter
T2  - Nucl. Phys. A
JO  - Nuclear Physics A
SP  - 231
EP  - 245
VL  - 989
PB  - Elsevier
KW  - Skyrmion
KW  - Dense matter
KW  - Phase transition
AB  - It was predicted qualitatively in ref. [I] that skyrmion matter at low density is stable in an inhomogeneous phase where skyrmions condensate into lumps while the remaining space is mostly empty. The aim of this paper is to proof quantitatively this prediction. In order to construct an inhomogeneous medium we distort the original FCC crystal to produce a phase of planar structures made of skyrmions. We implement mathematically these planar structures by means of the 't Hooft instanton solution using the Atiyah-Manton ansatz. The results of our calculation of the average density and energy confirm the prediction suggesting that the phase diagram of the dense skyrmion matter is a lot more complex than a simple phase transition from the skyrmion FCC crystal lattice to the half-skyrmion CC one. Our results show that skyrmion matter shares common properties with standard nuclear matter developing a skin and leading to a binding energy equation which resembles the Weiszacker mass formula.
SN  - 0375-9474
UR  - https://arxiv.org/abs/1904.04483
UR  - https://doi.org/10.1016/j.nuclphysa.2019.06.010
DO  - 10.1016/j.nuclphysa.2019.06.010
LA  - English
N1  - WOS:000478705300016
ID  - Park_etal2019
ER  -