Results 11 to 20 of about 30,484 (230)
Fermions without Fermion Fields [PDF]
Physical Review Letters, 2005 It is shown that an arbitrary Fermion hopping hamiltonian can be represented by a system with no fermion fields, generalising earlier results by M. Levin & X.G. Wen [Phys Rev B 67, 245316 (2003)]. All the operators in the hamiltonian of resulting description obey the principle of locality, that operators associated with different sites commute ...
Ball, Robin
openaire +5 more sources
Fermion damping in a fermion-scalar plasma [PDF]
Physical Review D, 1999 In this article we study the dynamics of fermions in a fermion-scalar plasma. We begin by obtaining the effective in-medium Dirac equation in real time which is fully renormalized and causal and leads to the initial value problem. For a heavy scalar we find the novel result that the decay of the scalar into fermion pairs in the medium leads to damping ...
Boyanovsky, D. +4 more
openaire +3 more sources
Fermion-bags and a new origin for a fermion mass [PDF]
Proceedings of The 32nd International Symposium on Lattice Field Theory — PoS(LATTICE2014), 2015 The fermion bag is a powerful idea that helps to solve fermion lattice field theories using Monte Carlo methods. Some sign problems that had remained unsolved earlier can be solved within this framework. In this work we argue that the fermion bag also gives insight into a new mechanism of fermion mass generation, especially at strong couplings where ...
Chandrasekharan, S
openaire +4 more sources
New Interacting Boson Fermion-Fermion Model results [PDF]
EPJ Web of ConferencesWe present a new application of the Interacting Boson Model (IBM) and its extensions for describing double charge exchange reactions. The study of double charge exchange reactions induced by heavy ions involving candidate nuclei for neutrinoless double ...
García-Tecocoatzi H. +3 more
doaj +2 more sources
Fermionization of Two Distinguishable Fermions [PDF]
Physical Review Letters, 2012 In this work we study a system of two distinguishable fermions in a 1D harmonic potential. This system has the exceptional property that there is an analytic solution for arbitrary values of the interparticle interaction. We tune the interaction strength via a magnetic offset field and compare the measured properties of the system to the theoretical ...
Zürn, G. +6 more
openaire +5 more sources
Nature, 2016 Published in Nature 532,189-194 (14 April 2016).
Wang, Zhijun +3 more
openaire +3 more sources
Tangent Fermions: Dirac or Majorana Fermions on a Lattice Without Fermion Doubling
Annalen der Physik, 2023 AbstractMethods to discretize the Hamiltonian of a topological insulator or topological superconductor, without giving up on the topological protection of the massless excitations (respectively, Dirac fermions or Majorana fermions) are reviewed. The method of tangent fermions, pioneered by Richard Stacey, is singled out as being uniquely suited for ...
Beenakker, C. W. J. +4 more
openaire +5 more sources
Fermion number conservation isn't fermion conservation [PDF]
Nuclear Physics B - Proceedings Supplements, 1994 A nonperturbative regularization of the Standard Model may have a superficially undesirable exact global U(1) symmetry corresponding to exact fermion number conservation. We argue that such a formulation can still have the desired physics of fermion nonconservation, i.e. fermion particle creation and annihilation by sphaleron transitions. We illustrate
Bock, W., Hetrick, J.E., Smit, J.
openaire +3 more sources
Transfer matrices and temporal factorization of the Wilson fermion determinant [PDF]
, 2022 When lattice QCD is formulated in sectors of fixed quark numbers, the canonical fermion determinants can be expressed explicitly in terms of transfer matrices.
Wenger, Urs
core +2 more sources
Physics Letters B, 1999 LaTex 5 pages, 6 figs, submitted for ...
Greene, Patrick B., Kofman, Lev
openaire +2 more sources