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It has been found that the topology effect and the possible emergent scale and hidden local flavor symmetries at high density reveal a novel structure of the compact star matter. The $N_f\geq2$ baryons can be described by the skyrmion in…

Nuclear Theory · Physics 2023-04-24 Yong-Liang Ma , Wen-Cong Yang

We clarify and extend further the idea developed in \cite{PKLMR,MLPR} that baryonic matter at high density has an emergent "pseudo-conformal symmetry." It is argued that as baryonic density exceeds $n \simeq n_{1/2} \gtrsim 2n_0$, a…

Nuclear Theory · Physics 2019-01-30 Yong-Liang Ma , Mannque Rho

We show that the cusp-like structure in the nuclear symmetry energy, a consequence of topology change, visible in the skyrmion lattice description of dense matter is extremely robust. It is present in the Skyrme model -- with the pion field…

Nuclear Theory · Physics 2019-05-15 Xiang-Hai Liu , Yong-Liang Ma , Mannque Rho

Exploiting certain robust topological inputs from the skyrmion description of compressed baryonic matter with a scale-chiral symmetric Lagrangian, we predict the equation of state that is consistent with the properties of nuclear matter at…

Nuclear Theory · Physics 2017-08-09 Won-Gi Paeng , Thomas T. S. Kuo , Hyun Kyu Lee , Yong-Liang Ma , Mannque Rho

We review the recent exploration of a possible "domain-wall structure" of compressed baryonic matter in massive compact stars in terms of fractional quantum Hall droplets and skyrmions for baryons in medium. The theoretical framework is…

Nuclear Theory · Physics 2021-08-10 Yong-Liang Ma , Mannque Rho

When baryon-quark continuity is formulated in terms of a topology change without invoking "explicit " QCD degrees of freedom at a density higher than twice the nuclear matter density $n_0$ the core of massive compact stars can be described…

Nuclear Theory · Physics 2021-05-03 Yong-Liang Ma , Mannque Rho

We describe the mapping at high density of topological structure of baryonic matter to a nuclear effective field theory that implements hidden symmetries emergent from strong nuclear correlations. The theory so constructed is found to be…

Nuclear Theory · Physics 2022-06-14 Mannque Rho

The nuclear symmetry energy figures crucially in the structure of asymmetric nuclei and, more importantly, in the equation of state (EoS) of compact stars. At present it is almost totally unknown, both experimentally and theoretically, in…

Nuclear Theory · Physics 2015-06-04 Hyun Kyu Lee , Mannque Rho

We construct a generalized EFT approach to dense compact-star matter that exploits the CCP for hadron-quark continuity at high density, hidden topology and hidden symmetries of QCD. No Landau-Ginzburg-Wilsonian-type phase transition is…

Nuclear Theory · Physics 2020-07-15 Yong-Liang Ma , Mannque Rho

We construct a new effective field theory approach to the equation of state (EoS), dubbed pseudo-confomal model "PCM," for nuclear and compact star matter entirely in terms of effective hadron degrees of freedom. The possible transition at…

Nuclear Theory · Physics 2018-09-21 Yong-Liang Ma , Hyun Kyu Lee , Won-Gi Paeng , Mannque Rho

An ``unorthodox" idea is developed that the long-standing mystery in nuclear physics of the effective axial-current coupling constant in nuclei, $g_A^{\rm eff}\approx 1$, could be interpreted in terms of an emerging hidden scale symmetry in…

Nuclear Theory · Physics 2025-08-06 Mannque Rho

We describe the on-going effort to formulate the baryon-quark continuity in terms of a topology change in the equation of state (EoS) of dense baryonic matter in analogy to -- and inspired by -- the mapping of the characteristics of…

Nuclear Theory · Physics 2021-05-21 Yong-Liang Ma , Mannque Rho

When skyrmions representing nucleons are put on crystal lattice and compressed to simulate high density, there is a transition above the normal nuclear matter density $n_0$ from a matter consisting of skyrmions with integer baryon charge to…

Nuclear Theory · Physics 2015-06-16 Hyun Kyu Lee , Mannque Rho

Topological structure has been extensively studied and confirmed in highly correlated condensed matter physics. We explore the gravitational waves emitted from binary neutron star mergers using the pseudoconformal model for dense nuclear…

Nuclear Theory · Physics 2021-07-07 Wen-Cong Yang , Yong-Liang Ma , Yue-Liang Wu

The hadron-quark/gluon duality formulated in terms of a topology change at a density $n\gsim 2n_0$ $n_0\simeq 0.16$fm$^{-3}$ is found to describe the core of massive compact stars in terms of quasiparticles of fractional baryon charges,…

Nuclear Theory · Physics 2021-05-12 Mannque Rho , Yong-Liang Ma

We review how the "cusp" predicted in the nuclear symmetry energy generated by a topology change at density $n_{1/2}\gsim 2 n_0$ can have a surprising consequence, so far unrecognized in nuclear physics and astrophysics communities, on the…

Nuclear Theory · Physics 2022-03-14 Hyun Kyu Lee , Yong-Liang Ma , Won-Gi Paeng , Mannque Rho

We review an approach, developed over the past few years, to describe hadronic matter at finite density and temperature, whose underlying theoretical framework is the Skyrme model, an effective low energy theory rooted in large $N_c$ QCD.…

High Energy Physics - Phenomenology · Physics 2016-12-21 Byung-Yoon Park , Vicente Vento

When hadron-quark continuity is formulated in terms of a topology change at a density higher than twice the nuclear matter densiy $n_0$ the core of massive compact stars can be described in terms of quasiparticles of fractional baryon…

Nuclear Theory · Physics 2020-10-27 Yong-Liang Ma , Mannque Rho

The dense compact star matter is studied by using the skyrmion crystal approach. The chiral effective theory used includes the lightest scalar meson, the lowest-lying vector mesons as well as pions. Consistency with the vector manifestation…

Nuclear Theory · Physics 2022-08-31 Long-Qi Shao , Yong-Liang Ma

The Skyrme model provides a novel unified approach to nuclear physics. In this approach, single baryon, baryonic matter and medium-modified hadron properties are treated on the same footing. Intrinsic density dependence (IDD) reflecting the…

Nuclear Theory · Physics 2017-01-20 Yong-Liang Ma , Mannque Rho
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