scholarly journals The pion velocity in dense skyrmion matter

2004 ◽  
Vol 741 ◽  
pp. 161-178 ◽  
Author(s):  
Hee-Jung Lee ◽  
Byung-Yoon Park ◽  
Mannque Rho ◽  
Vicente Vento
Keyword(s):  
Skyrmion Matter

scholarly journals Topology change, emergent symmetries and compact star matter

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Yong-Liang Ma ◽  
Mannque Rho
Keyword(s):  
Nuclear Matter ◽  
Compact Star ◽  
Momentum Tensor ◽  
Effective Field ◽  
Compact Stars ◽  
Strongly Correlated ◽  
Topology Change ◽  
Dense Nuclear Matter ◽  
Skyrmion Matter ◽  
Energy Constants

AbstractTopology effects have being extensively studied and confirmed in strongly correlated condensed matter physics. In the limit of large number of colors, baryons can be regarded as topological objects—skyrmions—and the baryonic matter can be regarded as a skyrmion matter. We review in this paper the generalized effective field theory for dense compact-star matter constructed with the robust inputs obtained from the skyrmion approach to dense nuclear matter, relying on possible “emergent” scale and local flavor symmetries at high density. All nuclear matter properties from the saturation density n0 up to several times n0 can be fairly well described. A uniquely novel—and unorthdox—feature of this theory is the precocious appearance of the pseudo-conformal sound velocity $v^{2}_{s}/c^{2} \approx 1/3$ v s 2 / c 2 ≈ 1 / 3 , with the non-vanishing trace of the energy momentum tensor of the system. The topology change encoded in the density scaling of low energy constants is interpreted as the quark-hadron continuity in the sense of Cheshire Cat Principle (CCP) at density $\gtrsim 2n_{0}$ ≳ 2 n 0 in accessing massive compact stars. We confront the approach with the data from GW170817 and GW190425.

scholarly journals Neutral pion decay intoνν¯in dense Skyrmion matter

2005 ◽  
Vol 71 (11) ◽  
Author(s):  
Alexander C. Kalloniatis ◽  
Jonathan D. Carroll ◽  
Byung-Yoon Park
Keyword(s):  
Neutral Pion ◽  
Pion Decay ◽  
Skyrmion Matter

scholarly journals Inhomogeneous quark condensate in compressed Skyrmion matter

2015 ◽  
Vol 91 (9) ◽  
Author(s):  
Masayasu Harada ◽  
Hyun Kyu Lee ◽  
Yong-Liang Ma ◽  
Mannque Rho
Keyword(s):  
Quark Condensate ◽  
Skyrmion Matter

scholarly journals The inhomogeneous phase of dense skyrmion matter

2019 ◽  
Vol 989 ◽  
pp. 231-245 ◽  
Author(s):  
Byung-Yoon Park ◽  
Won-Gi Paeng ◽  
Vicente Vento
Keyword(s):  
Inhomogeneous Phase ◽  
Skyrmion Matter

scholarly journals A unified approach to high density: pion fluctuations in skyrmion matter

2003 ◽  
Vol 723 (3-4) ◽  
pp. 427-446 ◽  
Author(s):  
Hee-Jung Lee ◽  
Byung-Yoon Park ◽  
Dong-Pil Min ◽  
Mannque Rho ◽  
Vicente Vento
Keyword(s):  
High Density ◽  
Unified Approach ◽  
Skyrmion Matter

scholarly journals Kaons in dense half-Skyrmion matter

2010 ◽  
Vol 81 (3) ◽  
Author(s):  
Byung-Yoon Park ◽  
Joon-Il Kim ◽  
Mannque Rho
Keyword(s):  
Skyrmion Matter

scholarly journals The role of the dilaton in dense skyrmion matter

2008 ◽  
Vol 807 (1-2) ◽  
pp. 28-37 ◽  
Author(s):  
Byung-Yoon Park ◽  
Mannque Rho ◽  
Vicente Vento
Keyword(s):  
Skyrmion Matter

scholarly journals High‐Density Skyrmion Matter and Neutron Stars

2008 ◽  
Vol 678 (1) ◽  
pp. 360-368 ◽  
Author(s):  
Prashanth Jaikumar ◽  
Manjari Bagchi ◽  
Rachid Ouyed
Keyword(s):  
Neutron Stars ◽  
High Density ◽  
Skyrmion Matter

scholarly journals Small Angle Neutron Scattering Studies of Skyrmion Lattices

2014 ◽  
Vol 70 (a1) ◽  
pp. C145-C145
Author(s):  
Sebastian Mühlbauer
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Real Space ◽  
Spin Transfer Torque ◽  
Structure Stability ◽  
Vortex Matter ◽  
Topological Stability ◽  
Skyrmion Matter ◽  
Spin Texture

Skyrmion lattices in chiral magnets can be regarded as macroscopic lattices formed by topological entities with particle like properties where the particle-like character of the Skyrmions is reflected in the integer winding number of their magnetization [1]. Caused by their topology, Skyrmions cannot be destroyed or created by a smooth deformation of a trivial spin texture. Skyrmion lines can be seen as magnetic whirls – sharing strong similarities with vortices of type II superconductors. Analogous to the large variety of different phases of superconducting vortex matter, Skyrmion lattice melting transitions, Skyrmion liquids and Skyrmion glass phases are expected to exist in the various B20 materials. The structure of Skyrmion matter thereby sensitively reflects the underlying physical properties of the material carrying the Skyrmions. Moreover, due to their topology, Skyrmion lattices in chiral magnets provide an excellent showcase for the investigation of topological stability and phase conversion [2]. A further consequence of the special topological properties of Skyrmions is called emergent electrodynamics: While moving through the Skyrmion lattice, conduction electrons collect a Berry´s phase in real space which leads to a very efficient coupling of transport current and magnetic structure. This leads to considerable spin transfer torque effects at current densities as low as 10^6 A/m2 [3]. Small angle neutron scattering (SANS) has played a central role in the investigation of Skyrmion lattices. We show how SANS can be used for a detailed investigation of the structure, stability, transport properties and topological decay of Skyrmion lattices in B20 compounds. *Work in collaboration with: T. Adams, A. Bauer, H. Berger, P. Böni, S. Buhrandt, A. Chacon, S. Dunsiger, L. Eng, K. Everschor-Sitte, M. Garst, R. Georgii, M. Janoschek, F. Jonietz, J. Kindervater, P. Milde, A. Neubauer, C. Pfleiderer, A. Rosch, C. Schütte, J. Seidel, J. Waizner, W. Wünzer

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