Results 41 to 50 of about 715,119 (186)
Instantaneous Bethe-Salpeter equation: improved analytical solution
, 2001 Studying the Bethe-Salpeter formalism for interactions instantaneous in the rest frame of the bound states described, we show that, for bound-state constituents of arbitrary masses, the mass of the ground state of a given spin may be calculated almost ...
FRANZ F. SCHÖBERL +7 more
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The Spinless Relativistic Woods-Saxon Problem [PDF]
, 2014 Motivated by the observation of a recent renewal of rather strong interest in the description of bound states by (semi-) relativistic equations of motion, we revisit, for the example of the Woods-Saxon interactions, the eigenvalue problem posed by the ...
Lucha, Wolfgang, Schoberl, Franz F.
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Analytic Quest for Confining Interaction Kernels in Instantaneous Bethe-Salpeter Equations
, 2010 The Salpeter equation, a standard tool in hadron physics, constitutes a well-defined three-dimensional approximation to the Bethe-Salpeter formalism for the description of bound states within quantum field theories. However, if confinement is implemented
Lucha, Wolfgang
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Instantaneous Bethe-Salpeter Approach to Pseudoscalar Mesons
, 2013 Light pseudoscalar mesons are Janus-type particles: Within quantum chromodynamics, they must be described as bound states of its fundamental degrees of freedom and as the (pseudo-) Goldstone bosons of its spontaneously broken chiral symmetry.
Lucha, Wolfgang
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Numerical Solution of the Spinless Salpeter Equation by a Semianalytical Matrix Method (a Mathematica 4.0 routine) [PDF]
, 2000 In quantum theory, the so-called "spinless Salpeter equation," the relativistic generalization of the nonrelativistic Schroedinger equation, is used to describe both bound states of scalar particles and the spin-averaged spectra of bound states of ...
Lucha, Wolfgang, Schoberl, F. F.
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Leptoconops bequaerti (Kieffer): un nuevo informe en la provincia de Santiago de Cuba
Medisan, 2014 Se realizó una investigación en la localidad de Sevilla, ubicada en el municipio costero de Guamá, en Santiago de Cuba, para identificar las especies de insectos causantes de molestias en esta población, así como sus principales fuentes de cría y los ...
Rosa María Castillo Quesada +4 more
doaj
AIDS Research and Treatment, 2014 HIV testing rates remain very low in Colombia, with only 20% of individuals at risk ever tested. In order to tackle this issue, the Corporacion de Lucha Contra el Sida (CLS) has implemented a multidisciplinary, provider-initiated, population-based HIV ...
Jaime Galindo-Quintero +6 more
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Revista Ciencias y Humanidades, 2022 En las últimas lecturas de la lucha social se ha catalogado a esta, desde las teorías del reconocimiento de Axel Honneth, como la fuerza impulsora de la evolución moral de la sociedad en pos de una mayor libertad.
Giancarlo Portugal Velasco
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, 2007 A popular three-dimensional reduction of the Bethe-Salpeter formalism for the description of bound states in quantum field theory is the Salpeter equation, derived by assuming both instantaneous interactions and free propagation of all bound-state ...
A. Weinstein +14 more
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