Abstract
I reconsider asymmetrically warped compactifications, in which time and space have different warp factors. I call such compactifications time warps if the bulk geometry has neither entropy nor temperature. I provide an example starting from an asymptotically AdS 5 spacetime where the speed of light, measured in a fixed coordinate system, is larger near the boundary than it is deep in the interior. This example follows the general plan of earlier work on superconducting black holes. To obtain a normalizable, four-dimensional graviton, one can introduce a Planck brane whose action includes a wrong-sign Einstein-Hilbert term. The equation of state of the Planck brane has w < −1, which is a violation of the null energy condition. I show, in an almost dimension-independent fashion, that such a violation must occur in a static time warp geometry. Time warps of the type I describe provide an extra-dimensional description of boost invariance as an emergent symmetry in the infrared. High-energy violations of Lorentz symmetry, if confined to a strongly coupled unparticle sector dual to the time warp geometry, might manifest themselves through unusual kinematic constraints. As an example, I explain how modifications of unparticle phase space would affect the decay of a heavy particle into a light visible sector particle plus unparticle stuff.
Similar content being viewed by others
References
P. Candelas, G.T. Horowitz, A. Strominger and E. Witten, Vacuum Configurations for Superstrings, Nucl. Phys. B 258 (1985) 46 [SPIRES].
M.R. Douglas and S. Kachru, Flux compactification, Rev. Mod. Phys. 79 (2007) 733 [hep-th/0610102] [SPIRES].
G.W. Gibbons, Aspects of supergravity theories, Three lectures given at GIFT Seminar on Theoretical Physics, San Feliu de Guixols, Spain, Jun 4-11 (1984).
J.M. Maldacena and C. Núñez, Supergravity description of field theories on curved manifolds and a no go theorem, Int. J. Mod. Phys. A 16 (2001) 822 [hep-th/0007018] [SPIRES].
H.L. Verlinde, Holography and compactification, Nucl. Phys. B 580 (2000) 264 [hep-th/9906182] [SPIRES].
D. Mattingly, Modern tests of Lorentz invariance, Living Rev. Rel. 8 (2005) 5 [gr-qc/0502097] [SPIRES].
G. Kaelbermann and H. Halevi, Nearness through an extra dimension, gr-qc/9810083 [SPIRES].
V.A. Rubakov and M.E. Shaposhnikov, Do We Live Inside a Domain Wall?, Phys. Lett. B 125 (1983) 136 [SPIRES].
M. Visser, An Exotic Class of Kaluza-Klein Models, Phys. Lett. B 159 (1985) 22 [hep-th/9910093] [SPIRES].
D.J.H. Chung and K. Freese, Can geodesics in extra dimensions solve the cosmological horizon problem?, Phys. Rev. D 62 (2000) 063513 [hep-ph/9910235] [SPIRES].
D. Youm, Brane world cosmologies with varying speed of light, Phys. Rev. D 63 (2001) 125011 [hep-th/0101228] [SPIRES].
J.W. Moffat, Superluminary universe: A Possible solution to the initial value problem in cosmology, Int. J. Mod. Phys. D 2 (1993) 351 [gr-qc/9211020] [SPIRES].
A.J. Albrecht and J. Magueijo, A time varying speed of light as a solution to cosmological puzzles, Phys. Rev. D 59 (1999) 043516 [astro-ph/9811018] [SPIRES].
J. Magueijo, New varying speed of light theories, Rept. Prog. Phys. 66 (2003) 2025 [astro-ph/0305457] [SPIRES].
D. Langlois, Brane cosmology: An introduction, Prog. Theor. Phys. Suppl. 148 (2003) 181 [hep-th/0209261] [SPIRES].
C. Csáki, J. Erlich and C. Grojean, Gravitational Lorentz violations and adjustment of the cosmological constant in asymmetrically warped spacetimes, Nucl. Phys. B 604 (2001) 312 [hep-th/0012143] [SPIRES].
L. Randall and R. Sundrum, An alternative to compactification, Phys. Rev. Lett. 83 (1999) 4690 [hep-th/9906064] [SPIRES].
E. Kiritsis, Supergravity, D-brane probes and thermal super Yang-Mills: A comparison, JHEP 10 (1999) 010 [hep-th/9906206] [SPIRES].
S.H.S. Alexander, On the varying speed of light in a brane-induced FRW universe, JHEP 11 (2000) 017 [hep-th/9912037] [SPIRES].
P. Bowcock, C. Charmousis and R. Gregory, General brane cosmologies and their global spacetime structure, Class. Quant. Grav. 17 (2000) 4745 [hep-th/0007177] [SPIRES].
J.M. Cline and H. Firouzjahi, No-go theorem for horizon-shielded self-tuning singularities, Phys. Rev. D 65 (2002) 043501 [hep-th/0107198] [SPIRES].
S.L. Dubovsky, Tunneling into extra dimension and high-energy violation of Lorentz invariance, JHEP 01 (2002) 012 [hep-th/0103205] [SPIRES].
C. Deffayet, G.R. Dvali, G. Gabadadze and A. Lue, Braneworld flattening by a cosmological constant, Phys. Rev. D 64 (2001) 104002 [hep-th/0104201] [SPIRES].
G.R. Dvali, G. Gabadadze and M. Porrati, 4D gravity on a brane in 5D Minkowski space, Phys. Lett. B 485 (2000) 208 [hep-th/0005016] [SPIRES].
A.R. Frey, String theoretic bounds on Lorentz-violating warped compactification, JHEP 04 (2003) 012 [hep-th/0301189] [SPIRES].
O.J. Ganor, A New Lorentz Violating Nonlocal Field Theory From String- Theory, Phys. Rev. D 75 (2007) 025002 [hep-th/0609107] [SPIRES].
P. Creminelli, Holography of asymmetrically warped space-times, Phys. Lett. B 532 (2002) 284 [hep-th/0111107] [SPIRES].
J.M. Cline and L. Valcarcel, Asymmetrically warped compactifications and gravitational Lorentz violation, JHEP 03 (2004) 032 [hep-ph/0312245] [SPIRES].
S.S. Gubser and F.D. Rocha, The gravity dual to a quantum critical point with spontaneous symmetry breaking, Phys. Rev. Lett. 102 (2009) 061601 [arXiv:0807.1737] [SPIRES].
S.S. Gubser, Breaking an Abelian gauge symmetry near a black hole horizon, Phys. Rev. D 78 (2008) 065034 [arXiv:0801.2977] [SPIRES].
S.A. Hartnoll, C.P. Herzog and G.T. Horowitz, Building a Holographic Superconductor, Phys. Rev. Lett. 101 (2008) 031601 [arXiv:0803.3295] [SPIRES].
S.A. Hartnoll, C.P. Herzog and G.T. Horowitz, Holographic Superconductors, JHEP 12 (2008) 015 [arXiv:0810.1563] [SPIRES].
S.S. Gubser and A. Nellore, Low-temperature behavior of the Abelian Higgs model in anti-de Sitter space, JHEP 04 (2009) 008 [arXiv:0810.4554] [SPIRES].
S.S. Gubser, Phase transitions near black hole horizons, Class. Quant. Grav. 22 (2005) 5121 [hep-th/0505189] [SPIRES].
S.A. Hartnoll, P.K. Kovtun, M. Muller and S. Sachdev, Theory of the Nernst effect near quantum phase transitions in condensed matter and in dyonic black holes, Phys. Rev. B 76 (2007) 144502 [arXiv:0706.3215] [SPIRES].
S.A. Hartnoll and C.P. Herzog, Ohm’s Law at strong coupling: S duality and the cyclotron resonance, Phys. Rev. D 76 (2007) 106012 [arXiv:0706.3228] [SPIRES].
P. Basu, A. Mukherjee and H.-H. Shieh, Supercurrent: Vector Hair for an AdS Black Hole, Phys. Rev. D 79 (2009) 045010 [arXiv:0809.4494] [SPIRES].
C.P. Herzog, P.K. Kovtun and D.T. Son, Holographic model of superfluidity, Phys. Rev. D 79 (2009) 066002 [arXiv:0809.4870] [SPIRES].
S. Sachdev and M. Mueller, Quantum criticality and black holes, arXiv:0810.3005 [SPIRES].
G.T. Horowitz and M.M. Roberts, Holographic Superconductors with Various Condensates, Phys. Rev. D 78 (2008) 126008 [arXiv:0810.1077] [SPIRES].
S.S. Gubser, Colorful horizons with charge in anti-de Sitter space, Phys. Rev. Lett. 101 (2008) 191601 [arXiv:0803.3483] [SPIRES].
S.S. Gubser and S.S. Pufu, The gravity dual of a p-wave superconductor, JHEP 11 (2008) 033 [arXiv:0805.2960] [SPIRES].
M.M. Roberts and S.A. Hartnoll, Pseudogap and time reversal breaking in a holographic superconductor, JHEP 08 (2008) 035 [arXiv:0805.3898] [SPIRES].
R. Manvelyan, E. Radu and D.H. Tchrakian, New AdS non Abelian black holes with superconducting horizons, Phys. Lett. B 677 (2009) 79 [arXiv:0812.3531] [SPIRES].
D.Z. Freedman, S.S. Gubser, K. Pilch and N.P. Warner, Renormalization group flows from holography supersymmetry and a c-theorem, Adv. Theor. Math. Phys. 3 (1999) 363 [hep-th/9904017] [SPIRES].
P. Breitenlohner and D.Z. Freedman, Positive Energy in anti-de Sitter Backgrounds and Gauged Extended Supergravity, Phys. Lett. B 115 (1982) 197 [SPIRES].
P. Breitenlohner and D.Z. Freedman, Stability in Gauged Extended Supergravity, Ann. Phys. 144 (1982) 249 [SPIRES].
I.R. Klebanov and E. Witten, AdS/CFT correspondence and symmetry breaking, Nucl. Phys. B 556 (1999) 89 [hep-th/9905104] [SPIRES].
E. Witten, Multi-trace operators, boundary conditions and AdS/CFT correspondence, hep-th/0112258 [SPIRES].
H. Georgi, Unparticle Physics, Phys. Rev. Lett. 98 (2007) 221601 [hep-ph/0703260] [SPIRES].
S.R. Das and S.D. Mathur, Comparing decay rates for black holes and D-branes, Nucl. Phys. B 478 (1996) 561 [hep-th/9606185] [SPIRES].
I.R. Klebanov, World-volume approach to absorption by non-dilatonic branes, Nucl. Phys. B 496 (1997) 231 [hep-th/9702076] [SPIRES].
S.S. Gubser, Absorption of photons and fermions by black holes in four dimensions, Phys. Rev. D 56 (1997) 7854 [hep-th/9706100] [SPIRES].
S.S. Gubser and I.R. Klebanov, Absorption by branes and Schwinger terms in the world volume theory, Phys. Lett. B 413 (1997) 41 [hep-th/9708005] [SPIRES].
J.M. Maldacena, The large-N limit of superconformal field theories and supergravity, Adv. Theor. Math. Phys. 2 (1998) 231 [Int. J. Theor. Phys. 38 (1999) 1113] [hep-th/9711200] [SPIRES].
S.S. Gubser, I.R. Klebanov and A.M. Polyakov, Gauge theory correlators from non-critical string theory, Phys. Lett. B 428 (1998) 105 [hep-th/9802109] [SPIRES].
E. Witten, Anti-de Sitter space and holography, Adv. Theor. Math. Phys. 2 (1998) 253 [hep-th/9802150] [SPIRES].
D.T. Son and A.O. Starinets, Minkowski-space correlators in AdS/CFT correspondence: Recipe and applications, JHEP 09 (2002) 042 [hep-th/0205051] [SPIRES].
C.P. Herzog and D.T. Son, Schwinger-Keldysh propagators from AdS/CFT correspondence, JHEP 03 (2003) 046 [hep-th/0212072] [SPIRES].
S.S. Gubser, A. Nellore, S.S. Pufu and F.D. Rocha, Thermodynamics and bulk viscosity of approximate black hole duals to finite temperature quantum chromodynamics, Phys. Rev. Lett. 101 (2008) 131601 [arXiv:0804.1950] [SPIRES].
S.S. Gubser, S.S. Pufu and F.D. Rocha, Bulk viscosity of strongly coupled plasmas with holographic duals, JHEP 08 (2008) 085 [arXiv:0806.0407] [SPIRES].
J. Polchinski and E. Witten, Evidence for Heterotic - Type I String Duality, Nucl. Phys. B 460 (1996) 525 [hep-th/95101699] [SPIRES].
P. Hořava and E. Witten, Heterotic and type-I string dynamics from eleven dimensions, Nucl. Phys. B 460 (1996) 506 [hep-th/9510209] [SPIRES].
P. Hořava and E. Witten, Eleven-Dimensional Supergravity on a Manifold with Boundary, Nucl. Phys. B 475 (1996) 94 [hep-th/9603142] [SPIRES].
A. Lukas, B.A. Ovrut, K.S. Stelle and D. Waldram, The universe as a domain wall, Phys. Rev. D 59 (1999) 086001 [hep-th/9803235] [SPIRES].
A. Lukas, B.A. Ovrut, K.S. Stelle and D. Waldram, Heterotic M-theory in five dimensions, Nucl. Phys. B 552 (1999) 246 [hep-th/9806051] [SPIRES].
P. Binetruy, C. Deffayet and D. Langlois, Non-conventional cosmology from a brane-universe, Nucl. Phys. B 565 (2000) 269 [hep-th/9905012] [SPIRES].
C. Armendariz-Picon, T. Damour and V.F. Mukhanov, k-Inflation, Phys. Lett. B 458 (1999) 209 [hep-th/9904075] [SPIRES].
J.M. Cline, S. Jeon and G.D. Moore, The phantom menaced: Constraints on low-energy effective ghosts, Phys. Rev. D 70 (2004) 043543 [hep-ph/0311312] [SPIRES].
P. Creminelli, M.A. Luty, A. Nicolis and L. Senatore, Starting the universe: Stable violation of the null energy condition and non-standard cosmologies, JHEP 12 (2006) 080 [hep-th/0606090] [SPIRES].
M. Alcubierre, The warp drive: hyper-fast travel within general relativity, Class. Quant. Grav. 11 (1994) L73 [gr-qc/0009013] [SPIRES].
C. Armendariz-Picon, V.F. Mukhanov and P.J. Steinhardt, Essentials of k-essence, Phys. Rev. D 63 (2001) 103510 [astro-ph/0006373] [SPIRES].
V. Sahni and Y. Shtanov, Braneworld models of dark energy, JCAP 11 (2003) 014 [astro-ph/0202346] [SPIRES].
S. Dubovsky, T. Gregoire, A. Nicolis and R. Rattazzi, Null energy condition and superluminal propagation, JHEP 03 (2006) 025 [hep-th/0512260] [SPIRES].
E.I. Buchbinder, J. Khoury and B.A. Ovrut, New Ekpyrotic Cosmology, Phys. Rev. D 76 (2007) 123503 [hep-th/0702154] [SPIRES].
K. Marvel and D. Wesley, Tunneling with negative tension, JHEP 12 (2008) 034 [arXiv:0808.3186] [SPIRES].
S.R. Coleman and S.L. Glashow, High-Energy Tests of Lorentz Invariance, Phys. Rev. D 59 (1999) 116008 [hep-ph/9812418] [SPIRES].
T. Jacobson, S. Liberati and D. Mattingly, TeV astrophysics constraints on Planck scale Lorentz violation, Phys. Rev. D 66 (2002) 081302 [hep-ph/0112207] [SPIRES].
G.D. Moore and A.E. Nelson, Lower bound on the propagation speed of gravity from gravitational Cherenkov radiation, JHEP 09 (2001) 023 [hep-ph/0106220] [SPIRES].
S. Chadha and H.B. Nielsen, Lorentz invariance as a low-energy phenomenon, Nucl. Phys. B 217 (1983) 125 [SPIRES].
K. Peeters, J. Sonnenschein and M. Zamaklar, Holographic melting and related properties of mesons in a quark gluon plasma, Phys. Rev. D 74 (2006) 106008 [hep-th/0606195] [SPIRES].
C.P. Herzog, A. Karch, P. Kovtun, C. Kozcaz and L.G. Yaffe, Energy loss of a heavy quark moving through N = 4 supersymmetric Yang-Mills plasma, JHEP 07 (2006) 013 [hep-th/0605158] [SPIRES].
H. Liu, K. Rajagopal and U.A. Wiedemann, An AdS/CFT calculation of screening in a hot wind, Phys. Rev. Lett. 98 (2007) 182301 [hep-ph/0607062] [SPIRES].
M. Chernicoff, J.A. Garcia and A. Guijosa, The energy of a moving quark-antiquark pair in an N = 4 SYM plasma, JHEP 09 (2006) 068 [hep-th/0607089] [SPIRES].
D. Mateos, R.C. Myers and R.M. Thomson, Thermodynamics of the brane, JHEP 05 (2007) 067 [hep-th/0701132] [SPIRES].
Q.J. Ejaz, T. Faulkner, H. Liu, K. Rajagopal and U.A. Wiedemann, A limiting velocity for quarkonium propagation in a strongly coupled plasma via AdS/CFT, JHEP 04 (2008) 089 [arXiv:0712.0590] [SPIRES].
P.C. Argyres, M. Edalati and J.F. Vazquez-Poritz, Lightlike Wilson loops from AdS/CFT, JHEP 03 (2008) 071 [arXiv:0801.4594] [SPIRES].
J. Casalderrey-Solana and D. Mateos, Prediction of a Photon Peak in Relativistic Heavy Ion Collisions, Phys. Rev. Lett. 102 (2009) 192302 [arXiv:0806.4172] [SPIRES].
Author information
Authors and Affiliations
Corresponding author
Additional information
ArXiv ePrint: 0812.5107
Rights and permissions
About this article
Cite this article
Gubser, S.S. Time warps. J. High Energ. Phys. 2010, 20 (2010). https://doi.org/10.1007/JHEP01(2010)020
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP01(2010)020