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Abstract:

We consider a free quantum scalar field satisfying modified dispersion relations in curved spacetimes, within the framework of Einstein-Aether theory. Using a power counting analysis, we study the divergences in the adiabatic expansion of 〈 φ{symbol}2 〉 and 〈 Tμ ν 〉, working in the weak field approximation. We show that for dispersion relations containing up to 2s powers of the spatial momentum, the subtraction necessary to renormalize these two quantities on general backgrounds depends on s in a qualitatively different way: while 〈 φ{symbol}2 〉 becomes convergent for a sufficiently large value of s, the number of divergent terms in the adiabatic expansion of 〈 Tμ ν 〉 increases with s. This property was not apparent in previous results for spatially homogeneous backgrounds. © 2009 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Renormalization in theories with modified dispersion relations: Weak gravitational fields
Autor:López Nacir, D.; Mazzitelli, F.D.
Filiación:Departamento de Física Juan José Giambiagi, Facultad de Ciencias Exactas y Naturales, UBA, Ciudad Universitaria, Pabellon I, 1428 Buenos Aires, Argentina
Año:2009
Volumen:672
Número:3
Página de inicio:294
Página de fin:298
DOI: http://dx.doi.org/10.1016/j.physletb.2009.01.025
Título revista:Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Título revista abreviado:Phys Lett Sect B Nucl Elem Part High-Energy Phys
ISSN:03702693
CODEN:PYLBA
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_03702693_v672_n3_p294_LopezNacir.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v672_n3_p294_LopezNacir

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Citas:

---------- APA ----------
López Nacir, D. & Mazzitelli, F.D. (2009) . Renormalization in theories with modified dispersion relations: Weak gravitational fields. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 672(3), 294-298.
http://dx.doi.org/10.1016/j.physletb.2009.01.025
---------- CHICAGO ----------
López Nacir, D., Mazzitelli, F.D. "Renormalization in theories with modified dispersion relations: Weak gravitational fields" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 672, no. 3 (2009) : 294-298.
http://dx.doi.org/10.1016/j.physletb.2009.01.025
---------- MLA ----------
López Nacir, D., Mazzitelli, F.D. "Renormalization in theories with modified dispersion relations: Weak gravitational fields" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 672, no. 3, 2009, pp. 294-298.
http://dx.doi.org/10.1016/j.physletb.2009.01.025
---------- VANCOUVER ----------
López Nacir, D., Mazzitelli, F.D. Renormalization in theories with modified dispersion relations: Weak gravitational fields. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 2009;672(3):294-298.
http://dx.doi.org/10.1016/j.physletb.2009.01.025