Results 21 to 30 of about 298,127 (271)
Some Examples of Calculation of Massless and Massive Feynman Integrals
Particles, 2021 We show some examples of calculations of massless and massive Feynman integrals.
Anatoly V. Kotikov
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Classical and Quantum Strings in plane waves, shock waves and spacetime singularities: synthesis and new results [PDF]
, 2003 Key issues of classical and quantum strings in gravitational plane waves, shock waves and spacetime singularities are synthetically understood. This includes the string mass and mode number excitations, energy-momentum tensor, scattering amplitudes ...
Sanchez, Norma G.
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Journal of High Energy Physics, 2003 Big bang/crunch curvature singularities in exact CFT string backgrounds can be removed by turning on gauge fields. This is described within a family of {SL(2)xSU(2)xU(1)_x}/{U(1)xU(1)} quotient CFTs. Uncharged incoming wavefunctions from the ``whiskers'' of the extended universe can be fully reflected if and only if a big bang/crunch curvature ...
Elitzur, Shmuel +2 more
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Kinematic Comparisons of Hybrid Mechanisms for Bone Surgery: 3-PRP-3-RPS and 3-RPS-3-PRP
Machines, 2022 This paper proposes an approach to derive the Jacobian matrix of a hybrid mechanism by applying a velocity operator to the transformation matrix. This Jacobian matrix is capable of deducing hybrid singularities, which cannot be identified by using the ...
Christopher Reinaldo +3 more
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The Geometry of Black Hole singularities [PDF]
, 2014 Recent results show that important singularities in General Relativity can be naturally described in terms of finite and invariant canonical geometric objects. Consequently, one can write field equations which are equivalent to Einstein's at non-singular
Stoica, Ovidiu Cristinel
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Nullcone Fronts of Spacelike Framed Curves in Minkowski 3-Space
Mathematics, 2021 The investigation of objects in Minkowski space is of great significance, especially for those objects with mathematical and physical backgrounds. In this paper, we study nullcone fronts, which are formed by the light rays emitted from points on a ...
Pengcheng Li, Donghe Pei
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Right unimodal and bimodal singularities in positive characteristic [PDF]
, 2015 The problem of classification of real and complex singularities was initiated by Arnol'd in the sixties who classified simple, unimodal and bimodal w.r.t. right equivalence.
Nguyen, Hong Duc
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Exotic singularities and spatially curved Loop Quantum Cosmology [PDF]
, 2010 We investigate the occurrence of various exotic spacelike singularities in the past and the future evolution of $k = \pm 1$ Friedmann-Robertson-Walker model and loop quantum cosmology using a sufficiently general phenomenological model for the equation ...
Francesca Vidotto +2 more
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Power Corrections in QCD: A Matter of Energy Resolution [PDF]
, 1995 We consider power-like corrections in QCD which can be viewed as power surpressed infrared singularities. We argue that the presence of these singularities depends crucially on the energy resolution.
A. H. Mueller +15 more
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Singularities of the eta function of first order differential operators
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2012 We report on a particular case of the paper [7], joint with Raphaël Ponge, showing that generically, the eta function of a first-order differential operator over a closed manifold of dimension n has first-order poles at all positive integers of the form ...
Loya Paul, Moroianu Sergiu
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