Comment on "Strong coupling in extended Horava-Lifshitz gravity" [Phys. Lett. B 685 (2010) 197]

被引：127

作者：

Blas, D. ^{[2
]}

Pujolas, O. ^{[1
]}

Sibiryakov, S. ^{[2
,3
]}

机构：

[1] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

[2] Ecole Polytech Fed Lausanne, FSB ITP LPPC, CH-1015 Lausanne, Switzerland

[3] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

来源：

PHYSICS LETTERS B | 2010年 / 688卷 / 4-5期

关键词：

Quantum gravity; Quantum field theory; Horava gravity; Lifshitz-type theories;

D O I：

10.1016/j.physletb.2010.03.073

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show that, contrary to the claim made in arXiv:0911.1299, the extended Horava gravity model proposed in arXiv:0909.3525 does not suffer from a strong coupling problem. By studying the observational constraints on the model we determine the bounds on the scale of the ultraviolet modification for which the proposal yields a phenomenologically viable, renormalizable and weakly coupled model of quantum gravity. (c) 2010 Elsevier B.V. All rights reserved.

引用

页码：350 / 355

页数：6

共 19 条

[1] Probing quantum gravity using photons from a flare of the active galactic nucleus Markarian 501 observed by the MAGIC telescope
Albert, J.
Aliu, E.
Anderhub, H.
Antonelli, L. A.
Antoranz, P.
Backes, M.
Baixeras, C.
Barrio, J. A.
Bartko, H.
Bastieri, D.
Becker, J. K.
Bednarek, W.
Berger, K.
Bernardini, E.
Bigongiari, C.
Biland, A.
Bock, R. K.
Bonnoli, G.
Bordas, P.
Bosch-Ramon, V.
Bretz, T.
Britvitch, I.
Camara, M.
Carmona, E.
Chilingarian, A.
Commichau, S.
Contreras, J. L.
Cortina, J.
Costado, M. T.
Covino, S.
Curtef, V.
Dazzi, F.
De Angelis, A.
De Cea del Pozo, E.
Mendez, C. Delgado
de los Reyes, R.
De Lotto, B.
De Maria, M.
De Sabata, F.
Dominguez, A.
Dorner, D.
Doro, M.
Errando, M.
Fagiolini, M.
Ferenc, D.
Fernandez, E.
Firpo, R.
Fonseca, M. V.
Font, L.
Galante, N.
[J]. PHYSICS LETTERS B, 2008, 668 (04) : 253 - 257
[2] BIAS D, 2009, JHEP, V910, P75001
[3] BLAS D, ARXIV09093525HEPTH
[4] BLAS D, UNPUB
[5] Lorentz-violating vector fields slow the universe down
Carroll, SM
Lim, EA
[J]. PHYSICAL REVIEW D, 2004, 70 (12): : 6
[6] Strong coupling in Horava gravity
Charmousis, Christos
Niz, Gustavo
Padilla, Antonio
Saffin, Paul M.
[J]. JOURNAL OF HIGH ENERGY PHYSICS, 2009, (08):
[7] Cheng H.-C., 2006, JHEP, V0605, P076, DOI [10.1088/1126-6708/2006/ 05/076, DOI 10.1088/1126-6708/2006/05/076]
[8] Lorentz invariance and quantum gravity: An additional fine-tuning problem?
Collins, J
Perez, A
Sudarsky, D
Urrutia, L
Vucetich, H
[J]. PHYSICAL REVIEW LETTERS, 2004, 93 (19) : 191301 - 1
[9] DERIVATION OF GAUGE-INVARIANCE FROM HIGH-ENERGY UNITARITY BOUNDS ON S-MATRIX
CORNWALL, JM
LEVIN, DN
TIKTOPOULOS, G
[J]. PHYSICAL REVIEW D, 1974, 10 (04) : 1145 - 1167
[10] CORRECTION
CORNWALL, JM
[J]. PHYSICAL REVIEW D, 1975, 11 (04): : 972 - 972

← 1 2 →