Results 21 to 30 of about 1,704 (228)
Composite fermion-boson mapping for fermionic lattice models [PDF]
Journal of Physics: Condensed Matter, 2014 We present a mapping of elementary fermion operators onto a quadratic form of composite fermionic and bosonic operators. The mapping is an exact isomorphism as long as the physical constraint of one composite particle per cluster is satisfied. This condition is treated on average in a composite particle mean-field approach, which consists of an ansatz ...
Zhao, J. +6 more
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Bloch ferromagnetism of composite fermions [PDF]
Nature Physics, 2020 In 1929 Felix Bloch suggested that the paramagnetic Fermi sea of electrons should make a spontaneous transition to a fully-magnetized state at very low densities, because the exchange energy gained by aligning the spins exceeds the enhancement in the kinetic energy.
Md Shafayat Hossain +11 more
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Hall viscosity of composite fermions [PDF]
Physical Review Research, 2020 Hall viscosity, also known as the Lorentz shear modulus, has been proposed as a topological property of a quantum Hall fluid. Using a recent formulation of the composite fermion theory on the torus, we evaluate the Hall viscosities for a large number of fractional quantum Hall states at filling factors of the form $ =n/(2pn\pm 1)$, where $n$ and $p ...
Songyang Pu, Mikael Fremling, J. K. Jain
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Composite fermion nonlinear sigma models [PDF]
Physical Review B, 2021 We study the integer quantum Hall plateau transition using composite fermion mean-field theory. We show that the topological $ = $ term in the associated nonlinear sigma model [P. Kumar et al., Phys. Rev. B 100, 235124 (2019)] is stable against a certain particle-hole symmetry violating perturbation, parameterized by the composite fermion effective ...
Chao-Jung Lee +2 more
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Gravitational waves from SU(N)/SP(N) composite Higgs models
Journal of High Energy Physics, 2023 We study possible strong first-order electroweak phase transitions in Composite Higgs models and we quantify the part of parameter space that can be probed with future gravitational wave experiments.
Mads T. Frandsen +4 more
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An effective strong-coupling theory of composite particles in UV-domain
Journal of High Energy Physics, 2017 We briefly review the effective field theory of massive composite particles, their gauge couplings and characteristic energy scale in the UV-domain of UV-stable fixed point of strong four-fermion coupling, then mainly focus the discussions on the decay ...
She-Sheng Xue
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On discrete anomalies in chiral gauge theories
Journal of High Energy Physics, 2022 We study two well-known SU(N) chiral gauge theories with fermions in the symmetric, anti-symmetric and fundamental representations. We give a detailed description of the global symmetry, including various discrete quotients. Recent work argues that these
Philip Boyle Smith +3 more
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Is the Composite Fermion a Dirac Particle?
Physical Review X, 2015 We propose a particle-hole symmetric theory of the Fermi-liquid ground state of a half-filled Landau level. This theory should be applicable for a Dirac fermion in the magnetic field at charge neutrality, as well as for the ν=1/2 quantum Hall ground ...
Dam Thanh Son
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Study of Spin–Spin Correlations between Quark and a Spin-1/2 Composite System
Advances in High Energy Physics, 2020 We study the correlation between the fermion composite system and quark spins by using the light-cone quark–diquark model. We do the calculations for u-quark and d-quark in the fermion system by considering different polarization configurations of both ...
Satvir Kaur, Harleen Dahiya
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European Physical Journal C: Particles and Fields, 2020 A new physics scenario shows that four-fermion operators of Nambu-Jona-Lasinio (NJL) type have a strong-coupling UV fixed point, where composite fermions F (bosons $$\Pi $$ Π ) form as bound states of three (two) SM elementary fermions and they couple to
R. Leonardi +5 more
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