Browsing by Author "Hojman Guiñerman, Sergio"
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Soto Eguibar, Francisco; Asenjo, Felipe A.; Hojman Guiñerman, Sergio; Moya Cessa, Héctor (Amer Inst Physics, 2021)In the MadelungBohm approach to quantum mechanics, we consider a time dependent phase that depends quadratically on position, and we show that it leads to a Bohm potential that corresponds to a time dependent harmonic ...

Hojman Guiñerman, Sergio; Asenjo, Felipe A. (IOP Publishing, 2013)The Lagrangian equations of motion for massive spinning test particles (tops) moving on a gravitational background using general relativity are presented. The paths followed by tops are nongeodesic.An exact solution for ...

Hojman Guiñerman, Sergio; Pardo, Francisco; Aulestia, Luis; De Lisa, Francisco (1992)In this work the inverse problem of the variational calculus for systems of differential equations of any order is analyzed. It is shown that, if a Lagrangian exists for a given regular system of differential equations, ...

Gomberoff Selowsky, Andres Simon (Universisdad de Chile, 1996)En esta tesis se estudia el problema inverso del calculo de variaciones. Se construyen formaciones hamiltonianas y lagrangianas (general, no canónicas) de ecuaciones de movimiento de primer orden

Hojman Guiñerman, Sergio; Núñez, Darío; Ryan, Michael P. (American Physical Society, 1992)We present the construction of a Hamiltonian description for a (nonLagrangian) Bianchi typeV cosmological model using the solutions of the equations of motion as a starting point. We study the quantization of the model ...

Bustamante, Miguel D.; Hojman Guiñerman, Sergio (2003)We present an approach to the construction of action principles (the inverse problem of the calculus of variations), for first order (in time derivatives) differential equations, and generalize it to field theory in order ...

Hojman Guiñerman, Sergio; Asenjo, Felipe (Springer New York LLC, 2018)Recent interest on studying possible violations of the Equivalence Principle has led to the development of space satellite missions testing it for bodies moving on circular orbits around Earth. This experiment establishes ...

Asenjo, Felipe A.; Hojman Guiñerman, Sergio (Springer, 2021)It is proved that accelerating nondiffracting gravitational Airy wavepackets are solutions of linearized gravity. It is also showed that Airy functions are exact solutions to Einstein equations for nonaccelerating ...

Hojman Guiñerman, Sergio (Sociedad Mexicana de Fisica, 2014)A mechanism that produces conical dispersion relations is presented. A Kronig Penney one dimensional array with two different strengths delta function potentials gives rise to both the gap closure and the dispersion relation ...

Hojman Guiñerman, Sergio; Asenjo, Felipe A. (American Institute of Physics, 2020)We present a phenomenological procedure of dealing with the COVID19 (coronavirus disease 2019) data provided by government health agencies of 11 different countries. Usually, the exact or approximate solutions of ...

Hojman Guiñerman, Sergio (American Physical Society, 2018)© 2018 American Physical Society. A new definition of proper time, which may incorporate all of the fundamental interactions as well as the whole Poincaré group, is presented. The new proper time definition reduces to the ...

Hojman Guiñerman, Sergio (1993)A new (nonNoetherian) symmetry transformation for the small oscillations problem is exhibited. A novel way to solve this classical problem, based on conservation laws constructed using the new symmetry, is presented. ...

Hojman Guiñerman, Sergio; Asenjo, Felipe A. (American Physical Society, 2015)The Einstein equations for an isotropic and homogeneous FriedmannRobertsonWalker universe in the presence of a quintessence scalar field are shown to be described in a compact way, formally identical to the dynamics of ...

Cordero, P.; Hojman Guiñerman, Sergio (Società Italiana di Fisica, 1987)We introduce a new definition of symmetry transformations in quantum mechanics which contains the textbook definition as a special case. We find several conserved quantities associated with one (nonunitary) symmetry ...

Hojman Guiñerman, Sergio (1996)A method to construct Hamiltonian theories for systems of both ordinary and partial differential equations is presented. The knowledge of a Lagrangian is not at all necessary to achieve the result. The only ingredients ...

Hojman Guiñerman, Sergio; Asenjo, Felipe A. (IOP, 2022)A unification in terms of exact solutions for massless KleinGordon, Dirac, Maxwell, RaritaSchwinger, Einstein, and bosonic and fermionic fields of any spin is presented. The method is based on writing all of the relevant ...