Browsing NTNU Open by Author "Adhikari, Prabal"
Now showing items 1-12 of 12
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Chiral density wave versus pion condensation in the (1+1)-dimensional NJL model
Andersen, Jens Oluf; Adhikari, Prabal (Journal article; Peer reviewed, 2017)In this paper, we study the possibility of an inhomogeneous quark condensate in the (1 þ 1)-dimensional Nambu-Jona-Lasinio model in the large-Nc limit at finite temperature T and quark chemical potential μ using dimensional ... -
Condensates and pressure of two-flavor chiral perturbation theory at nonzero isospin and temperature
Andersen, Jens Oluf; Mojahed, Martin Aria; Adhikari, Prabal (Peer reviewed; Journal article, 2021)We consider two-flavor chiral perturbation theory (χPT) at finite isospin chemical potential μI and finite temperature T . We calculate the effective potential and the quark and pion condensates as functions of T and μI ... -
Consistent regularization and renormalization in models with inhomogeneous phases
Andersen, Jens Oluf; Adhikari, Prabal (Journal article; Peer reviewed, 2017)In many models in condensed matter and high-energy physics, one finds inhomogeneous phases at high density and low temperature. These phases are characterized by a spatially dependent condensate or order parameter. A proper ... -
Inhomogeneous chiral condensate in the quark-meson model
Adhikari, Prabal; Andersen, Jens Oluf; Kneschke, Patrick (Journal article; Peer reviewed, 2017)The two-flavor quark-meson model is used as a low-energy effective model for QCD to study inhomogeneous chiral condensates at finite baryon chemical potential μB . The parameters of the model are determined by matching the ... -
On-shell parameter fixing in the quark-meson model
Adhikari, Prabal; Andersen, Jens Oluf; Kneschke, Patrick (Journal article; Peer reviewed, 2017)The quark-meson model is often used as an effective low-energy model for QCD to study the chiral transition at finite temperature T and baryon chemical potential μB. The parameters in the quark-meson model can be found by ... -
Pion and kaon condensation at zero temperature in three-flavor χ\chiχPT at nonzero isospin and strange chemical potentials at next-to-leading order
Adhikari, Prabal; Andersen, Jens Oluf (Peer reviewed; Journal article, 2020)We consider three-flavor chiral perturbation theory (χPT) at zero temperature and nonzero isospin (µI ) and strange (µS) chemical potentials. The effective potential is calculated to next-to-leading order (NLO) in the π ... -
Pion condensation and phase diagram in the Polyakov-loop quark-meson model
Adhikari, Prabal; Andersen, Jens Oluf; Kneschke, Patrick (Journal article; Peer reviewed, 2018)We use the Polyakov-loop extended two-flavor quark-meson model as a low-energy effective model for QCD to study the phase diagram in the μI–T plane where μI is the isospin chemical potential. In particular, we focus on the ... -
Pion condensation and the QCD phase diagram at finite isospin density
Adhikari, Prabal; Andersen, Jens Oluf; Kneschke, Patrick (Journal article; Peer reviewed, 2019)We use the Polyakov-loop extended two-flavor quark-meson model as a low-energy effective model for QCD to study 1) the possibility of inhomogeneous chiral condensates and its competition with a homogeneous pion condensate ... -
QCD at finite isospin density: chiral perturbation theory confronts lattice data
Adhikari, Prabal; Andersen, Jens Oluf (Peer reviewed; Journal article, 2020)We consider the thermodynamics of three-flavor QCD in the pion-condensed phase at nonzero isospin chemical potential (μI) and vanishing temperature using chiral perturbation theory in the isospin limit. The transition from ... -
Quark and pion condensates at finite isospin density in chiral perturbation theory
Adhikari, Prabal; Andersen, Jens Oluf (Peer reviewed; Journal article, 2020)I denne artikkelen vurderer vi to-smak QCD ved null temperatur og endelig isospin kjemisk potensiale μJegμI ved hjelp av en modelluavhengig analyse innen chiral forstyrrelsesteori i neste ledende rekkefølge. Vi beregner ... -
Two-flavor chiral perturbation theory at nonzero isospin: Pion condensation at zero temperature
Adhikari, Prabal; Andersen, Jens Oluf; Kneschke, Patrick (Journal article; Peer reviewed, 2019)In this paper, we calculate the equation of state of two-flavor finite isospin chiral perturbation theory at next-to-leading order in the pion-condensed phase at zero temperature. We show that the transition from the vacuum ... -
Vacuum free energy, quark condensate shifts and magnetization in three-flavor chiral perturbation theory to O(𝑝6) in a uniform magnetic field
Adhikari, Prabal; Strumke, Inga (Peer reviewed; Journal article, 2023)We study three-flavor QCD in a uniform magnetic field using chiral perturbation theory (χPT). We construct the vacuum free energy density, quark condensate shifts induced by the magnetic field and the renormalized magnetization ...