Brane World: Cosmology and Gravitation  

Gravitation and Geometry > s.a. Pauli-Fierz Theory; tests of general relativity; modifications and tests of newtonian gravity.
* Issues: Gravity in 5D braneworld backgrounds often exhibits problematic features, including kinetic ghosts, strong coupling, and the van Dam-Veltman-Zakharov (vDVZ) discontinuity, which are an obstacle to producing and analyzing models with interesting and potentially observable modifications of 4D gravity.
* And Newtonian gravity: On scales r R, the force goes like F r–(n+2); On scales r R, it goes like F r –2.
@ Reviews: Schwarzschild PT(00)sep; Langlois gq/04-GR17; Kumar & Suresh ht/06; Gabadadze a0705-ln; Antoniadis JPA(07); Kaloper a0711-in [codimension 2].
@ General references: Fairbairn PLB(01)hp; Steer & Parry IJTP(02)ht-in; Khoury & Zhang PRL(02)ht [Friedmann equation]; Medved ht/02 [charged black hole problem]; Kofinas et al JHEP(03)ht [curvature corrections]; Bao et al PRD(06).
@ Issues: Chung et al PRD(02)hp/00 [flatness problem]; Deruelle & Katz PRD(01) [recovering general relativity on the brane]; Carroll & Mersini PRD(01)ht [self-tuning]; Singh & Dadhich MPLA(03) [localization].
@ Corrections to Newtonian gravity: Ito PLB(02)ht/01; Park & Tamaryan PLB(03), Callin hp/04, Callin & Ravndal PRD(04)hp [Randall-Sundrum]; Arnowitt & Dent PRD(05)ht/04 [Kaluza-Klein-type corrections]; de Rham et al gq/06 [weaker at sub-mm scales]; Palma a0705 [susy braneworld].
@ Tests: Iorio JCAP(05)gq/04 [solar system], CQG(05)gq, gq/05, JCAP(06), Iorio & Giudice JCAP(06)gq/05 [DGP, outer planet motion]; Böhmer et al a0801-CQG [solar system].
@ And general relativity: Bruni et al PRL(01)gq [collapse, no-go result]; Langlois IJMPA(02)gq-in, gq/02-in [rev]; Anderson & Tavakol CQG(03)gq [bulk-brane split]; Durrer & Kocian CQG(04)ht/03 [binary pulsar and radiation]; Iorio IJMPD(06)gq/05 [DGP, spin precession].
@ Quantum gravity: Maia et al JHEP(07)-a0704 [ADM formalism].
@ Related topics: Battye et al PRD(01)ht [Gauss-Codazzi]; Soda gq/01-in [for relativists]; Kanti et al PLB(02) [size]; Bogdanos et al a0706.
> Other issues: see censorship; energy conditions; initial value formulation; models.

Cosmology in General > s.a. acceleration; cosmological constant; entropy; quantum cosmology; quintessence; string phenomenology.
* Phenomenology: 2000, Carroll showed that if the number of extra dimensions n 2, and with some model for matter (gauge field + cosmological constant), there are no stable models; Expects this to be true more generally; 2003, Models seem to have difficulties producing a reasonable inflation.
* Models: Randall-Sundrum models have an AdS bulk; Dvali-Gabadadze-Porrati (DGP) models have a flat bulk.
@ Intros, reviews: Carter IJTP(01); Langlois PTPS(02)ht-in; Brax & van de Bruck CQG(03)ht; Maartens LRR(04)gq/03; Brax et al RPP(04)ht; Calcagni ht/04-in [inflation, phen]; Coley CJP(05)ap; Langlois ht/05-in; Wands gq/06-in; Cline a0704; Steinhardt & Turok 07.
@ Bounce solutions: Kanti & Tamvakis PRD(03); Setare EPJC(06)ht [from self-gravity correction to Friedmann equation].
@ DGP models: Dvali et al PLB(00)ht; Lue PRP(06); Gregory et al JHEP(07); Gregory a0801-in [fatal flaws]; Battat et al PRD-a0805 [Solar System constraints].
@ Models: Maggiore & Riotto NPB(99)ht/98; Cline et al PRL(99) [FRW + ]; Ida JHEP(00); Kaloper et al PRL(00)ht; Starkman et al PRD(01)ht/00 [FRW × compact hyperbolic]; Medved ht/02 [AdS black hole bulk]; Carroll & Guica ht/03 [football-shaped extra D's]; Barrow & Tsagas PRD(04)gq/03 [Gödel-type]; Gibbons et al PRL(05) [colliding branes]; > s.a. bianchi models.
@ Constraints: Hannestad PRD(01)hp; Fairbairn & Goobar PLB(06)ap/05 [from sn surveys]; Palma PRD(06)ht/05; Alam & Sahni PRD(06); Fay A&A(06)ht; Dicus & Repko ap/06 [supernovas and DGP]; Rebouças ap/07-in [non-trivial topology and DGP].
@ Tests: Calcagni JCAP(03)hp, JCAP(04)hp/03 [inflation]; Pires et al PRD(06) [lookback time]; Huang et al JCAP(06) [inflation].
@ And big bang: Blanco-Pillado et al PRD(04)ht/03 [colliding bubbles].
@ And inflation: Mazumdar & Wang PLB(00); Huey & Lidsey PLB(01), PRD(02)ap; Kyae & Shafi PLB(02); Green & Mazumdar PRD(02)hp [hybrid]; Kallosh & Linde JCAP(03)ht [susy]; Tsujikawa et al PRD(04) [constraints]; > s.a. inflationary scenarios.
@ Related topics: Tye & Wasserman PRL(01) [solution to cosmological constant problem]; Youm PRD(01), PRD(01) [variable c]; Maia et al CQG(05)ap/04 [dark energy]; Godlowski & Szydlowski GRG(04)ap [and supernova data]; Gergely PRD(05)gq/04 [no swiss cheese]; Ponce de León GRG(06)gq/04; Antoniadis et al gq/07-in [and singularities]; Greene & Levin JHEP(07) [stabilization and dark energy]; news pw(08)jan [liquid He-3 analog of brane collision]; > s.a. FRW spacetime, perturbations.

Ekpyrotic Scenario > s.a. early universe; inflationary scenarios [alternatives].
* Idea: A cosmological scenario without an initial singularity, proposed in 2001 by Steinhardt, Khoury, Turok and Ovrut; The hot big bang is produced in an otherwise empty, static universe by the collision of a brane in the bulk with a bounding orbifold plane; Claims to solve the horizon, flatness and monopole problems and generate a nearly scale-invariant spectrum of perturbations without the superluminal expansion of inflation.
@ General references: Khoury et al PRD(01)ht; Kallosh et al PRD(01)ht [criticism], Khoury et al ht/01 [response]; Hwang PRD(02)ap/01 [power spectrum]; Räsänen NPB(02)ht/01 [brane collisions]; Martin et al PRD(02)ht/01 [bounce]; Rasanen ap/02-PhD [primer]; news pw(08)jan [new version].
@ New Ekpyrotic Cosmology: Buchbinder et al PRD(07)ht; Buchbinder et al a0706 [initial conditions].
@ Perturbations: Brandenberger & Finelli JHEP(01)ht [effective field theory]; Durrer ht/01; Garriga & Tanaka PRD(02)ht/01; Lyth PLB(02)hp/01 [bounce]; Martin et al PRD(03)ht/02; Peter et al ht/02-in; Lehners et al ht/07.

Related Effects > s.a. branes [astrophysics]; collapse; modified general relativity [signature change]; gravitational instantons.
@ Cosmology: Coley CQG(02) [no chaos in Bianchi IX]; Germani & Sopuerta ASS(03)ht/02 [varying G and ].
@ And cmb anisotropy: Koyama PRL(03); Ringeval et al ht/03/PRD.
> Other: see casimir force; dark_matter; phenomenology of quantum gravity; topological defects; topology change.

Randall-Sundrum Models > s.a. black holes; boundaries in field theory; branes; propagation of gravitational waves; tests of general relativity.
* Idea: The extra dimensions are compactified; The usual spacetime is a 4D hypersurface or brane, and the bulk spacetime is AdS; Need a large < 0; First model motivated by claims that it solves the hierarchy problem; Second model, with hidden brane pushed to infinite distance, motivated by claims that it reproduces Newtonian gravity.
@ Theory: Randall & Sundrum PRL(99)ht, PRL(99)ht + pn(99)oct; Garriga & Tanaka PRL(00)ht/99 [and gravity]; Ichinose CQG(01)ht/00 [1 wall], PRD(02)ht/00 [wall + anti-wall]; Kakushadze PLB(01)ht/00 [gravity]; Campos & Sopuerta PRD(01)ht, PRD(01)ht; Mannheim ht/06-in [propagators and causality].
@ Models: Padmanabhan & Shankaranarayanan PRD(01)ht/00 [4D Schwarzschild, de Sitter]; Barceló & Campos PLB(03)ht/02 [analogs]; Randall et al JHEP(05)ht [discretized].
@ And cosmology: Barceló & Visser PLB(00)ht [in 5D-AdS]; Stoica et al PLB(00)ht; van de Bruck et al PLB(00)ht; Boehm et al PRD(01)ht [instability]; Campos & Sopuerta PRD(01)ap [Bianchi I & V]; Kanno PRD(05)ht [Horava-Witten supersymmetric extension].


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