Results 81 to 90 of about 217,019 (271)

Nambu-Goldstone Mechanism in Real-Time Thermal Field Theory [PDF]

open access: yes, 1999
In a one-generation fermion condensate scheme of electroweak symmetry breaking, it is proven based on Schwinger-Dyson equation in the real-time thermal field theory in the fermion bubble diagram approximation that, at finite temperature $T$ below the ...
A. D. Linde   +31 more
core   +2 more sources

Accelerated Discovery of Topological Conductors for Nanoscale Interconnects

open access: yesAdvanced Science, EarlyView.
Copper interconnects exhibit a sharp increase in resistivity at ultra‐scaled dimensions, threatening continued miniaturization of integrated circuits. The gapless surface states of topological semimetals provide conduction channels resistant to localization.
Alexander C. Tyner   +7 more
wiley   +1 more source

Large $$N_\mathrm{f}$$ N f for multiple representations

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We present an extension of the large- $$N_\mathrm{f}$$ N f formalism that allows one to study cases with multiple fermion representations. The pole structure in the beta function is traced back to the intrinsic non-abelian nature of the gauge group ...
Giacomo Cacciapaglia, Shahram Vatani
doaj   +1 more source

Four-Fermion Dynamics and Fermion Masses

open access: yes, 1995
Four-fermion operators with large anomalous dimension may feed down mass to quarks and leptons from a heavy fourth family. No technicolor sector is required.
Holdom, B.
core   +2 more sources

Spectroscopic Evidence of Edge‐Localized States in an Antiferromagnet Topological Insulator NdBi

open access: yesAdvanced Science, EarlyView.
Using spin‐polarized scanning tunneling microscopy (STM) in conjunction with quasiparticle interference, we successfully identify distinct signatures of the ferromagnetic and antiferromagnetic terminations in NdBi, a rare‐earth monopnictide exhibiting non‐trivial topology and magnetism. We demonstrate that step edges on ferromagnetic surfaces host well‐
Avior Almoalem   +8 more
wiley   +1 more source

Is the Composite Fermion a Dirac Particle?

open access: yesPhysical 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
doaj   +1 more source

Boson induced s-wave pairing in dilute boson-fermion mixtures

open access: yes, 2001
We show that in dilute boson-fermion mixtures with fermions in two internal states, even when the bare fermion-fermion interaction is repulsive, the exchange of density fluctuations of the Bose condensate may lead to an effective fermion-fermion ...
A.C. Anderson   +14 more
core   +2 more sources

Large Room Temperature Anomalous Nernst Effect Coupled with Topological Nernst Effect from Incommensurate Spin Structure in a Kagome Antiferromagnet

open access: yesAdvanced Science, EarlyView.
This study demonstrates that ErMn₆Sn₆, a kagome antiferromagnet hosting incommensurate spin textures, sustains finite scalar spin chirality that drives topological states. The anomalous Nernst effect (ANE) originates from the strong Berry curvature of Chern‐gapped Dirac fermions, while the topological Nernst effect (TNE) arises from emergent fields ...
Jiajun Ma   +8 more
wiley   +1 more source

Inverse seesaw accompanied by Dirac fermionic dark matter

open access: yesPhysics Letters B, 2020
We present an inverse seesaw mechanism by resorting to a U(1)B−L gauge symmetry. In order to cancel the gauge anomalies, we introduce nine neutral fermions among which six participate in the inverse seesaw, while the other three form a Dirac fermion and ...
Pei-Hong Gu
doaj   +1 more source

Fermion dispersion in axion medium

open access: yes, 2008
The interaction of a fermion with the dense axion medium is investigated for the purpose of finding an axion medium effect on the fermion dispersion.
E. N. NARYNSKAYA   +2 more
core   +1 more source

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