Results 41 to 50 of about 1,301,287 (191)

Operator Representation of Fermi-Dirac and Bose-Einstein Integral Functions with Applications

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2007
Fermi-Dirac and Bose-Einstein functions arise as quantum statistical distributions. The Riemann zeta function and its extension, the polylogarithm function, arise in the theory of numbers.
M. Aslam Chaudhry, Asghar Qadir
doaj   +1 more source

The Wilson Dirac Spectrum for QCD with Dynamical Quarks

open access: yes, 2011
All microscopic correlation functions of the spectrum of the Hermitian Wilson Dirac operator with any number of flavors with equal masses are computed. In particular, we give explicit results for the spectral density in the physical case with two light ...
Splittorff, K., Verbaarschot, J. J. M.
core   +1 more source

On the Dolbeault–Dirac operator of quantized symmetric spaces [PDF]

open access: yes, 2013
The Dolbeault complex of a quantized compact Hermitian symmetric space is expressed in terms of the Koszul complex of a braided symmetric algebra of Berenstein and Zwicknagl.
U. Kraehmer, Matthew Tucker-Simmons
semanticscholar   +1 more source

Supercharge Operator of Hidden Symmetry in the Dirac Equation

open access: yes, 2006
As is known, the so-called Dirac $K$-operator commutes with the Dirac Hamiltonian for arbitrary central potential $V(r)$. Therefore the spectrum is degenerate with respect to two signs of its eigenvalues. This degeneracy may be described by some operator,
Khachidze, Tamari~T.   +1 more
core   +1 more source

Topologically invariant transformation for lattice fermions [PDF]

open access: yes, 2000
A transformation is devised to convert any lattice Dirac fermion operator into a Ginsparg-Wilson Dirac fermion operator. For the standard Wilson-Dirac lattice fermion operator, the transformed new operator is local, free of O(a) lattice artifacts, has ...
Chiu, Ting-Wai
core   +2 more sources

Incomplete inverse spectral and nodal problems for Dirac operator

open access: yesAdvances in Differential Equations, 2015
The incomplete inverse spectral and inverse nodal problems for Dirac operator defined on a finite interval with separated boundary conditions are considered. We prove uniqueness theorems for the so-called incomplete inverse spectral problem.
Zhaoying Wei   +2 more
semanticscholar   +1 more source

On Quantitative Bounds on Eigenvalues of a Complex Perturbation of a Dirac Operator [PDF]

open access: yes, 2013
We prove a Lieb–Thirring type inequality for a complex perturbation of a d-dimensional massive Dirac operator $${D_m, m\geq 0, d \geq 1}$$Dm,m≥0,d≥1 whose spectrum is $${]-\infty,-m]\cup[m,+\infty[}$$]-∞,-m]∪[m,+∞[ .
C. Dubuisson
semanticscholar   +1 more source

Wilson, fixed point and Neuberger's lattice Dirac operator for the Schwinger model

open access: yes, 1998
We perform a comparison between different lattice regularizations of the Dirac operator for massless fermions in the framework of the single and two flavor Schwinger model.
Farchioni, F., Hip, I., Lang, C. B.
core   +1 more source

Spectral properties of the Wilson-Dirac operator and random matrix theory [PDF]

open access: yes, 2013
Random Matrix Theory has been successfully applied to lattice Quantum Chromodynamics. In particular, a great deal of progress has been made on the understanding, numerically as well as analytically, of the spectral properties of the Wilson Dirac operator.
M. Kieburg   +2 more
semanticscholar   +1 more source

Adaptive Aggregation-Based Domain Decomposition Multigrid for the Lattice Wilson-Dirac Operator [PDF]

open access: yesSIAM Journal on Scientific Computing, 2013
In lattice quantum chromodynamics (QCD) computations a substantial amount of work is spent in solving discretized versions of the Dirac equation. Conventional Krylov solvers show critical slowing down for large system sizes and physically interesting ...
A. Frommer   +4 more
semanticscholar   +1 more source

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