Holography and thermodynamics of 5D dilaton-gravity

Gürsoy, Umut; Kiritsis, Elias; Mazzanti, Liuba; Nitti, Francesco

doi:10.1088/1126-6708/2009/05/033

Cited by 281 publications

(584 citation statements)

References 77 publications

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“…The starting point of our finite temperature analysis is the T = 0 holographic model introduced in [26], based on previous theoretical ideas in [30][31][32][33][34][35][36][37][38][39][40]. Moving to finite T implies studying black hole solutions of the action in [26].…”

Section: Jhep01(2013)093mentioning

confidence: 99%

“…The other scalar, the "tachyon" τ , is dual to the quark mass operatorqq. The potentials and interactions were modeled along successful bottomup models for YM, namely Improved Holographic QCD (IHQCD) [30][31][32][33][34][35][36] and the idea that string theory tachyon condensation describes chiral symmetry breaking [37][38][39][62][63][64][65].…”

Section: V-qcd At Zero Temperaturementioning

confidence: 99%

“…The pure glue potential V g has been determined from previous studies [33][34][35]. The tachyon potential V f (λ, τ ) must satisfy some basic properties determined by the dual theory or by general properties of tachyons in string theory: (a) To provide the proper dimension for the dual operator near the boundary (b) To exponentially vanish for τ → ∞.…”

Section: Jhep01(2013)093mentioning

confidence: 99%

“…The notion of regularity is tricky even in the case of IHQCD (pure glue), as there is a naked singularity in the far IR. For the dilaton this has been settled in [30][31][32][33][34][35]. For the tachyon the notion of regularity is different and has been studied in detail in [38,39].…”

Section: Jhep01(2013)093mentioning

confidence: 99%

“…Black hole solutions for such potentials were discussed in generality in [33][34][35]. After fixing all invariances, they are characterised by a single IR constant, λ h , the value of the dilaton at the horizon.…”

Section: Black Holes Without Tachyon Hairmentioning

confidence: 99%

See 4 more Smart Citations

On finite-temperature holographic QCD in the Veneziano limit

Alho

Järvinen

Kajantie

et al. 2013

J. High Energ. Phys.

197

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Holographic models in the T = 0 universality class of QCD in the limit of large number N c of colors and N f massless fermion flavors, but constant ratio x f = N f /N c , are analyzed at finite temperature. The models contain a 5-dimensional metric and two scalars, a dilaton sourcing TrF 2 and a tachyon dual toqq. The phase structure on the T, x f plane is computed and various 1st order, 2nd order transitions and crossovers with their chiral symmetry properties are identified. For each x f , the temperature dependence of p/T 4 and the condensate qq is computed. In the simplest case, we find that for x f up to the critical x c ∼ 4 there is a 1st order transition on which chiral symmetry is broken and the energy density jumps. In the conformal window x c < x f < 11/2, there is only a continuous crossover between two conformal phases. When approaching x c from below, x f → x c , temperature scales approach zero as specified by Miransky scaling.

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Section: Jhep01(2013)093mentioning

confidence: 99%

Section: V-qcd At Zero Temperaturementioning

confidence: 99%

Section: Jhep01(2013)093mentioning

confidence: 99%

Section: Jhep01(2013)093mentioning

confidence: 99%

Section: Black Holes Without Tachyon Hairmentioning

confidence: 99%

See 3 more Smart Citations

On finite-temperature holographic QCD in the Veneziano limit

Alho

Järvinen

Kajantie

et al. 2013

J. High Energ. Phys.

197

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Dissecting the string theory dual to QCD

Kiritsis

2009

Fortschritte der Physik

169

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Input from QCD and string theory is used in order to elucidate basic features of the string theory dual of QCD, It is argued that the relevant string theory is a five-dimensional version of the type-0 superstring. The vacuum solution is asymptotically AdS5, and the geometry near the boundary is stringy. The structure of YM perturbation theory however emerges near the boundary. In the IR, the theory is argued to be wellapproximated by a two-derivative truncation that takes into account strong coupling effects. This explains the success of previously proposed five-dimensional Eistein-dilaton gravity with an appropriate potential to describe salient features of the strong YM dynamics.Fortschr. Phys. 57, No. 5 -7 (2009) 397 that changed our perception of the description of strongly-coupled large-N c gauge theories, [2][3][4]. The prototype example has been the AdS/CFT correspondence as exemplified by the (well studied by now) duality of N = 4 super Yang-Mills theory and IIB string theory on AdS 5 × S 5 . Further studies focused on providing examples that are closer to real world QCD, [5,6]. It is fair to say that we now have a good holographic understanding of phenomena like confinement, chiral symmetry and its breaking as well as several related issues. The finite temperature dynamics of gauge theories, has a natural holographic counterpart in the thermodynamics of black-holes on the gravity side, and the thermal properties of various holographic constructions have been widely studied, [5,[7][8][9][10], exhibiting the holographic version of deconfinement and chiral restoration transitions.The simplest top-down string theory model of QCD involves D 4 branes with supersymmetry breaking boundary conditions for fermions [5], as well as a flavor sector that involves pairs of D 8 − D 8 probe branes inserted in the bulk, [11]. The qualitative thermal properties of this model closely mimic what we expect in QCD, [8]. Although such theories reproduced the qualitative features of IR QCD dynamics, they contain Kaluza-Klein modes, not expected in QCD, with KK masses of the same order as the dynamical scale of the gauge theory. Above this scale the theories deviate from QCD. Therefore, although the qualitative features of the relevant phenomena are correct, a quantitative matching to real QCD is difficult.Despite the hostile environment of non-critical theory, several attempts have been made to understand holographic physics in lower dimensions in order to avoid the KK contamination, based on two-derivative gravitational actions, [12,13]. Indeed, large N c QCD is expected to be described by a 5-dimensional theory. The alternative problem in non-critical theories is that curvatures are of string scale size and the truncation of the theory to the zero mode sector is subtle and may be misleading.A different and more phenomenological bottom-up approach was developed and is now known as AdS/QCD. The original idea described in [14] was successfully applied to the meson sector in [15], and its thermodynamics was analyzed in [9]. The...

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Holographic RG flow and the quantum effective action

Kiritsis

Nitti

2014

Fortschritte der Physik

118

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The calculation of the full (renormalized) holographic action is undertaken in general Einstein-scalar theories. The appropriate formalism is developed and the renormalized effective action is calculated up to two derivatives in the metric and scalar operators. The holographic RG equations involve a generalized Ricci flow for the space-time metric as well as the standard β-function flow for scalar operators. Several examples are analyzed and the effective action is calculated. A set of conserved quantities of the holographic flow is found, whose interpretation is not yet understood.

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Holography and thermodynamics of 5D dilaton-gravity

Cited by 281 publications

References 77 publications

On finite-temperature holographic QCD in the Veneziano limit

On finite-temperature holographic QCD in the Veneziano limit

Dissecting the string theory dual to QCD

Holographic RG flow and the quantum effective action

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