Competition of chiral soliton lattice and Abrikosov vortex lattice in QCD with isospin chemical potential [PDF]
The European Physical Journal C, 2022 We investigate the thermodynamics of two-flavor quark matter in presence of nonzero isospin chemical potential and external magnetic field. It is known that at sufficiently high isospin chemical potential, charged pions undergo Bose–Einstein condensation
Martin Spillum Grønli, T. Brauner
semanticscholar +3 more sources
Isovector density and isospin impurity in 40Ca
Physics Letters B, 2022 We study isoscalar (IS) and isovector (IV) densities in Ca40 in comparison with theoretical densities calculated by Skyrme Hatree-Fock (HF) models. The charge symmetry breaking and the charge independence breaking forces are introduced to study the ...
H. Sagawa +6 more
doaj +2 more sources
Isospin-violating contributions to ∈′/∈ [PDF]
Journal of High Energy Physics, 2019 The known isospin-breaking contributions to the K → ππ amplitudes are reanalyzed, taking into account our current understanding of the quark masses and the relevant non-perturbative inputs.
V. Cirigliano +3 more
semanticscholar +5 more sources
Veneziano Ghost Versus Isospin Breaking [PDF]
Physical Review D, 1993 It is argued that an account for the Veneziano ghost pole, appearing in resolving the U(1) problem, is necessary for understanding an isospin violation in the $ \pi - \eta - \eta' $ system. By virtue of a perturbative expansion around the $ SU(2)_{V} $ (
B. L. Ioffee +34 more
core +3 more sources
Isospin magnetism and spin-polarized superconductivity in Bernal bilayer graphene [PDF]
Science, 2021 In conventional superconductors, Cooper pairing occurs between electrons of opposite spin. We observe spin-polarized superconductivity in Bernal bilayer graphene when doped to a saddle-point van Hove singularity generated by a large applied perpendicular
Haoxin Zhou +9 more
semanticscholar +1 more source
Quark mass dependence of ππ scattering in isospin 0, 1, and 2 from lattice QCD [PDF]
Physical Review D, 2023 Using lattice QCD we extract $\pi\pi$ scattering amplitudes with isospin--0,1,2 in low partial-waves at two values of the light quark mass corresponding to $m_\pi \sim 283$ and $330$ MeV.
A. Rodas, J. Dudek, R. Edwards
semanticscholar +1 more source
Isospin equilibration in neutron star mergers [PDF]
Physical Review C, 2023 We analyze the isospin equilibration properties of neutrinoless nuclear ($npe$) matter in the temperature and density range that is relevant to neutron star mergers.
M. Alford, A. Haber, Ziyuan Zhang
semanticscholar +1 more source
QCD equation of state at finite isospin density from the linear sigma model with quarks: The cold case [PDF]
Physical Review D, 2023 We use the two-flavor linear sigma model with quarks to study the phase structure of isospin asymmetric matter at zero temperature. The meson degrees of freedom provide the mean field chiral- and isospin-condensates on top of which we compute the ...
A. Ayala +4 more
semanticscholar +1 more source
Enhanced contribution of the pairing gap to the QCD equation of state at large isospin chemical potential [PDF]
Physical Review D, 2023 I study QCD at large isospin density, which is known to be in the superfluid state with Cooper pairs carrying the same quantum number as pions. I solve the gap equation derived from the perturbation theory up to the next-to-leading order corrections. The
Yuki Fujimoto
semanticscholar +1 more source
Cascade of isospin phase transitions in Bernal-stacked bilayer graphene at zero magnetic field [PDF]
Nature Physics, 2021 Emergent phenomena arising from the collective behaviour of electrons is expected when Coulomb interactions dominate over the kinetic energy, and one way to create this situation is to reduce the electronic bandwidth.
S. C. de la Barrera +7 more
semanticscholar +1 more source