Mott transition with holographic spectral function
Sign Up to like & getrecommendations! Published in 2018 at "Journal of High Energy Physics"
DOI: 10.1007/jhep08(2018)077
Abstract: A bstractWe show that the Mott transition can be realized in a holographic model of a fermion with bulk mass, m, and a dipole interaction of coupling strength p. The phase diagram contains gapless, pseudo-gap… read more here.
Keywords: spectral function; transition holographic; mott transition; holographic model ... See more keywords
Modified spectral function based DOA estimation in colored noise
Sign Up to like & getrecommendations! Published in 2021 at "AEU - International Journal of Electronics and Communications"
DOI: 10.1016/j.aeue.2021.153892
Abstract: Abstract With the wide application of large-scale antenna arrays in the field of radar, sonar and wireless communication, direction of arrival (DOA) estimation based on the general asymptotic theory (GAT) has received more and more… read more here.
Keywords: estimation; colored noise; spectral function; modified spectral ... See more keywords
Dynamical quasiparticle properties of gapped monolayer graphene in the presence of Holstein phonons
Sign Up to like & getrecommendations! Published in 2019 at "Solid State Communications"
DOI: 10.1016/j.ssc.2018.10.011
Abstract: Abstract We have calculated the quasiparticle particle self-energy and spectral function in a graphene plane when a symmetry breaking of the sublattice is occurred. Holstein model Hamiltonian has been applied to describe the electron dynamics… read more here.
Keywords: gap parameter; graphene; dependence; quasiparticle ... See more keywords
Quark-antiquark scattering phase shift and meson spectral function in pion superfluid
Sign Up to like & getrecommendations! Published in 2019 at "Chinese Physics C"
DOI: 10.1088/1674-1137/43/5/054103
Abstract: We study the quark-antiquark scattering phase shift and meson spectral function in the pion superfluid described by the Nambu--Jona-Lasinio model. The meson mixing in the pion superfluid changes dramatically the full scattering phase shift and… read more here.
Keywords: spectral function; phase shift; pion superfluid; scattering phase ... See more keywords
Spectral function of an electron coupled to hard-core bosons
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.035135
Abstract: The polaron, an electron dressed with HCB excitations, remains light even in the strong coupling limit as its effective mass remains of the order of the free electron mass. This result is in a sharp… read more here.
Keywords: spectral function; electron coupled; function electron; coupled hard ... See more keywords
Dynamical spectral function from numerical renormalization group: A full excitation approach
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.085125
Abstract: For a given quantum impurity model, Wilson's numerical renormalization group (NRG) naturally defines a NRG Hamiltonian whose exact eigenstates and eigenenergies are obtainable. We give exact expressions for the free energy, static, as well as… read more here.
Keywords: renormalization group; dynamical spectral; numerical renormalization; spectral function ... See more keywords
Temperature-dependent electron-phonon spectral function and the intrinsic resistivity of a metal: A case study of monolayer Ti2N
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.165402
Abstract: The transport spectral function of electron-phonon ($e$-ph) interaction in the double $\ensuremath{\delta}$-function approximation (DDFA) is extensively employed to calculate the intrinsic resistivity (arising from $e$-ph scattering) of metallic materials in recent works of first-principles calculations.… read more here.
Keywords: monolayer; spectral function; intrinsic resistivity; mathrm ... See more keywords
Ghost spectral function from the spectral Dyson-Schwinger equation
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review D"
DOI: 10.1103/physrevd.104.074017
Abstract: We compute the ghost spectral function in Yang-Mills theory by solving the corresponding DysonSchwinger equation for a given input gluon spectral function. The results encompass both scaling and decoupling solutions for the gluon propagator input.… read more here.
Keywords: function spectral; spectral dyson; ghost spectral; equation ... See more keywords
Spectral Function for Overoccupied Gluodynamics from Classical Lattice Simulations
Sign Up to like & getrecommendations! Published in 2019 at "Acta Physica Polonica B"
DOI: 10.5506/aphyspolb.50.1105
Abstract: We study the spectral properties of an overoccupied gluonic system far from equilibrium. Using classical Yang-Mills simulations and linear response theory, we determine the statistical and spectral functions. We measure dispersion relations and damping rates… read more here.
Keywords: function overoccupied; overoccupied gluodynamics; gluodynamics classical; classical lattice ... See more keywords