Pfaffian Formula for Fermion Parity Fluctuations in a Superconductor and Application to Majorana Fusion Detection
Sign Up to like & getrecommendations! Published in 2019 at "Annalen der Physik"
DOI: 10.1002/andp.201900129
Abstract: Kitaev's Pfaffian formula equates the ground-state fermion parity of a closed system to the sign of the Pfaffian of the Hamiltonian in the Majorana basis. Using Klich's theory of full counting statistics for paired fermions… read more here.
Keywords: fermion; fermion parity; majorana; pfaffian formula ... See more keywords
Has the origin of the third-family fermion masses been determined?
Sign Up to like & getrecommendations! Published in 2021 at "Journal of High Energy Physics"
DOI: 10.1007/jhep04(2021)151
Abstract: Precision measurements of the Higgs couplings are, for the first time, directly probing the mechanism of fermion mass generation. The purpose of this work is to determine to what extent these measurements can distinguish between… read more here.
Keywords: family fermion; origin third; fermion masses; fermion ... See more keywords
Anomaly-free dark matter models are not so simple
Sign Up to like & getrecommendations! Published in 2017 at "Journal of High Energy Physics"
DOI: 10.1007/jhep08(2017)053
Abstract: A bstractWe explore the anomaly-cancellation constraints on simplified dark matter (DM) models with an extra U(1)′ gauge boson Z′. We show that, if the Standard Model (SM) fermions are supplemented by a single DM fermion… read more here.
Keywords: free dark; matter models; dark matter; anomaly free ... See more keywords
Order-Disorder Transition in the Half-Filled Two-Component Lattice Fermion Model with Nearest-Neighbor Repulsion
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Superconductivity and Novel Magnetism"
DOI: 10.1007/s10948-020-05453-x
Abstract: In this work, we study a model of asymmetric two-component lattice fermion system at half-filling, where particles of both species (distinguishable by, e.g., spin) can interact only via nearest-neighbor repulsion W . The analysis is… read more here.
Keywords: order; component lattice; transition; fermion ... See more keywords
Hamiltonian models of interacting fermion fields in quantum field theory
Sign Up to like & getrecommendations! Published in 2019 at "Letters in Mathematical Physics"
DOI: 10.1007/s11005-019-01193-9
Abstract: We consider hamiltonian models representing an arbitrary number of spin $1/2$ fermion quantum fields interacting through arbitrary processes of creation or annihilation of particles. The fields may be massive or massless. The interaction form factors… read more here.
Keywords: theory; hamiltonian models; fermion fields; interacting fermion ... See more keywords
Violation of the Equivalence Principle in Non-Hermitian Fermion Theory
Sign Up to like & getrecommendations! Published in 2018 at "Russian Physics Journal"
DOI: 10.1007/s11182-018-1545-9
Abstract: Consequences of the non-Hermitian expansion of the Dirac equation in which the mass term is written in the form m → m1 + γ5m2 are considered. It is shown that such procedure inevitably leads to… read more here.
Keywords: fermion; non hermitian; equivalence principle; violation ... See more keywords
Min-max and max-min principles for the solution of 2 + 1 Dirac fermion in magnetic field, graphene lattice and layered diatomic materials
Sign Up to like & getrecommendations! Published in 2018 at "Chemical Physics Letters"
DOI: 10.1016/j.cplett.2017.12.049
Abstract: Abstract This work displays the min-max and max-min principles involved in solving different 2 + 1 Dirac fermion problems. The first problem concerns a charged fermionic oscillator in an external homogeneous magnetic field, for which a quantum… read more here.
Keywords: min max; max min; max; min ... See more keywords
Quantum criticality of fermion velocities and critical temperature nearby a putative quantum phase transition in the d-wave superconductors
Sign Up to like & getrecommendations! Published in 2022 at "Nuclear Physics B"
DOI: 10.1016/j.nuclphysb.2022.115651
Abstract: Quantum critical behaviors induced by a putative quantum phase transition is vigilantly investigated, which separates a d-wave superconducting and d-wave superconducting+X state below the superconducting dome of the d−wave superconductors with tuning the non-thermal doping… read more here.
Keywords: quantum phase; phase transition; fermion velocities; fermion ... See more keywords
The minimal flavor structure from decomposition of the fermion mass matrix
Sign Up to like & getrecommendations! Published in 2022 at "Nuclear Physics B"
DOI: 10.1016/j.nuclphysb.2022.115699
Abstract: The minimal flavor structures for both quarks and leptons are proposed to address fermion mass hierarchy and flavor mixings by bi-unitary decomposition of the fermion mass matrix. The real matrix Mf0 is completely responsive to… read more here.
Keywords: mass; flavor; matrix; flavor structure ... See more keywords
Statistical complexity in an SU(2) × SU(2) many-fermion environment
Sign Up to like & getrecommendations! Published in 2019 at "Physica A: Statistical Mechanics and its Applications"
DOI: 10.1016/j.physa.2018.10.058
Abstract: Abstract We consider a typical many body problem. In particular, we study an exactly solvable fermion system. We apply to it recently developed statistical quantifiers like the statistical complexity C and the disequilibrium D .… read more here.
Keywords: statistical complexity; complexity many; many fermion; fermion ... See more keywords
Experimental quantum simulation of fermion-antifermion scattering via boson exchange in a trapped ion
Sign Up to like & getrecommendations! Published in 2017 at "Nature Communications"
DOI: 10.1038/s41467-017-02507-y
Abstract: Quantum field theories describe a variety of fundamental phenomena in physics. However, their study often involves cumbersome numerical simulations. Quantum simulators, on the other hand, may outperform classical computational capacities due to their potential scalability.… read more here.
Keywords: quantum field; quantum simulation; ion; trapped ion ... See more keywords