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Showing 1 to 9 of 9 entries
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Reexamination of the power spectrum in de Sitter inflation.

Physical review letters

Agulló I, Navarro-Salas J, Olmo GJ, Parker L.
PMID: 18999735
Phys Rev Lett. 2008 Oct 24;101(17):171301. doi: 10.1103/PhysRevLett.101.171301. Epub 2008 Oct 20.

We find that the amplitude of quantum fluctuations of the invariant de Sitter vacuum coincides exactly with that of the vacuum of a comoving observer for a massless scalar (inflaton) field. We propose redefining the actual physical power spectrum...

Revising the predictions of inflation for the cosmic microwave background anisotropies.

Physical review letters

Agulló I, Navarro-Salas J, Olmo GJ, Parker L.
PMID: 19792548
Phys Rev Lett. 2009 Aug 07;103(6):061301. doi: 10.1103/PhysRevLett.103.061301. Epub 2009 Aug 04.

We point out that, if quantum field renormalization is taken into account and the counterterms are evaluated at the Hubble-radius crossing time or few e-foldings after it, the predictions of slow-roll inflation for both the scalar and the tensorial...

Spontaneous Creation of Circularly Polarized Photons in Chiral Astrophysical Systems.

Physical review letters

Del Rio A, Sanchis-Gual N, Mewes V, Agullo I, Font JA, Navarro-Salas J.
PMID: 32530658
Phys Rev Lett. 2020 May 29;124(21):211301. doi: 10.1103/PhysRevLett.124.211301.

This work establishes a relation between chiral anomalies in curved spacetimes and the radiative content of the gravitational field. In particular, we show that a flux of circularly polarized gravitational waves triggers the spontaneous creation of photons with net...

Hawking radiation by Kerr black holes and conformal symmetry.

Physical review letters

Agullo I, Navarro-Salas J, Olmo GJ, Parker L.
PMID: 21231287
Phys Rev Lett. 2010 Nov 19;105(21):211305. doi: 10.1103/PhysRevLett.105.211305. Epub 2010 Nov 19.

The exponential blueshift associated with the event horizon of a black hole makes conformal symmetry play a fundamental role in accounting for its thermal properties. Using a derivation based on two-point functions, we show that the full spectrum of...

Electromagnetic Duality Anomaly in Curved Spacetimes.

Physical review letters

Agullo I, Del Rio A, Navarro-Salas J.
PMID: 28368645
Phys Rev Lett. 2017 Mar 17;118(11):111301. doi: 10.1103/PhysRevLett.118.111301. Epub 2017 Mar 15.

The source-free Maxwell action is invariant under electric-magnetic duality rotations in arbitrary spacetimes. This leads to a conserved classical Noether charge. We show that this conservation law is broken at the quantum level in the presence of a background...

Black hole radiance, short distances, and TeV gravity.

Physical review letters

Agulló I, Navarro-Salas J, Olmo GJ.
PMID: 16907564
Phys Rev Lett. 2006 Jul 28;97(4):041302. doi: 10.1103/PhysRevLett.97.041302. Epub 2006 Jul 26.

Using a derivation of black hole radiance in terms of two-point functions one can provide a quantitative estimate of the contribution of short distances to the spectrum. Thermality is preserved for black holes with kappalp

Penicillinotherapy.

El Dia medico

NAVARRO SALA P.
PMID: 18140645
Dia Med. 1949 Aug 01;21(44):1719.

No abstract available.

Reduced canonical quantization of the induced two-dimensional gravity.

Physical review. D, Particles and fields

Aldaya V, Navarro M, Navarro-Salas J, Talavera CF.
PMID: 10017786
Phys Rev D Part Fields. 1994 Jul 15;50(2):901-908. doi: 10.1103/physrevd.50.901.

No abstract available.

Diffeomorphisms, Noether charges, and the canonical formalism in two-dimensional dilaton gravity.

Physical review. D, Particles and fields

Navarro M, Navarro-Salas J, Talavera CF.
PMID: 10019222
Phys Rev D Part Fields. 1995 Dec 15;52(12):6831-6839. doi: 10.1103/physrevd.52.6831.

No abstract available.

Showing 1 to 9 of 9 entries