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Abstract:

The running of Newton's constant can be taken into account by considering covariant, nonlocal generalizations of the field equations of general relativity. These generalizations involve nonanalytic functions of the d'Alembertian, as (-□)-α, with α a noninteger number, and ln [-□]. In this paper we define these nonlocal operators in terms of the usual two point function of a massive field. We analyze some of their properties, and present specific calculations in flat and Robertson Walker spacetimes. © 2007 The American Physical Society.

Registro:

Documento: Artículo
Título:Running of Newton's constant and noninteger powers of the d'Alembertian
Autor:López Nacir, D.; Mazzitelli, F.D.
Filiación:Departamento de Física Juan José Giambiagi, Facultad de Ciencias Exactas Y Naturales, Pabellón I, 1428 Buenos Aires, Argentina
Año:2007
Volumen:75
Número:2
DOI: http://dx.doi.org/10.1103/PhysRevD.75.024003
Título revista:Physical Review D - Particles, Fields, Gravitation and Cosmology
Título revista abreviado:Phys Rev D Part Fields Gravit Cosmol
ISSN:15507998
CODEN:PRVDA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v75_n2_p_LopezNacir

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Citas:

---------- APA ----------
López Nacir, D. & Mazzitelli, F.D. (2007) . Running of Newton's constant and noninteger powers of the d'Alembertian. Physical Review D - Particles, Fields, Gravitation and Cosmology, 75(2).
http://dx.doi.org/10.1103/PhysRevD.75.024003
---------- CHICAGO ----------
López Nacir, D., Mazzitelli, F.D. "Running of Newton's constant and noninteger powers of the d'Alembertian" . Physical Review D - Particles, Fields, Gravitation and Cosmology 75, no. 2 (2007).
http://dx.doi.org/10.1103/PhysRevD.75.024003
---------- MLA ----------
López Nacir, D., Mazzitelli, F.D. "Running of Newton's constant and noninteger powers of the d'Alembertian" . Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 75, no. 2, 2007.
http://dx.doi.org/10.1103/PhysRevD.75.024003
---------- VANCOUVER ----------
López Nacir, D., Mazzitelli, F.D. Running of Newton's constant and noninteger powers of the d'Alembertian. Phys Rev D Part Fields Gravit Cosmol. 2007;75(2).
http://dx.doi.org/10.1103/PhysRevD.75.024003