Effects of D-instantons

Green, Michael; Gutperle, Michael

doi:10.1016/s0550-3213(97)00269-1

Cited by 484 publications

(1,165 citation statements)

References 38 publications

Supporting

Mentioning

1,115

Contrasting

Unclassified

Order By: Relevance

“…(6.5) and (3.8)), the dominant contribution for small g s is the one in which a single vertex V φ is inserted in each disk [11,18], namely 12) whereas other terms, like for example (6.11), are subleading for small g s 12 . Moreover, this correlator is clearly 1PI.…”

Section: String Amplitudes and Instanton Calculusmentioning

confidence: 99%

“…The role of D-instantons and their relation to the gauge theory instantons have been intensively studied from many different points of view in the last years (see for example Refs. [10,11,12,14,13,15,16,17,18]; for recent reviews on this subject see Refs. [20,21,22] and references therein).…”

Section: Introductionmentioning

confidence: 99%

“…We believe that this fact helps to clarify the analysis and the prescriptions presented in Refs. [11,18] and also provides the conceptual bridge necessary to relate the D-instanton techniques of string theory with the standard instanton calculus in field theory. This paper is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Classical gauge instantons from open strings

Billó

Frau

Pesando

et al. 2003

J. High Energy Phys.

163

491

View full text Add to dashboard Cite

We study the D3/D(−1) brane system and show how to compute instanton corrections to correlation functions of gauge theories in four dimensions using open string techniques. In particular we show that the disks with mixed boundary conditions that are typical of the D3/D(−1) system are the sources for the classical instanton solution. This can then be recovered from simple calculations of open string scattering amplitudes in the presence of D-instantons. Exploiting this fact we also relate this stringy description to the standard instanton calculus of field theory.

show abstract

Section: String Amplitudes and Instanton Calculusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Classical gauge instantons from open strings

Billó

Frau

Pesando

et al. 2003

J. High Energy Phys.

163

491

View full text Add to dashboard Cite

show abstract

“…This problem has been intensively investigated in the past, see e.g. [1,28,[76][77][78][79][80][81][82][83][84][85][86][87][88][89] and our present understanding mainly derives from [86][87][88]. Indeed, it should be possible to resolve the problem by dualising under the Euclidean path integral and following the fate of the instanton solution.…”

Section: Jhep02(2017)097mentioning

confidence: 99%

Can gravitational instantons really constrain axion inflation?

Hebecker¹,

Mangat²,

Theisen

et al. 2017

J. High Energ. Phys.

100

View full text Add to dashboard Cite

Axions play a central role in inflationary model building and other cosmological applications. This is mainly due to their flat potential, which is protected by a global shift symmetry. However, quantum gravity is known to break global symmetries, the crucial effect in the present context being gravitational instantons or Giddings-Strominger wormholes. We attempt to quantify, as model-independently as possible, how large a scalar potential is induced by this general quantum gravity effect. We pay particular attention to the crucial issue which solutions can or cannot be trusted in the presence of a moduli-stabilisation and a Kaluza-Klein scale. An important conclusion is that, due to specific numerical prefactors, the effect is surprisingly small even in UV-completions with the highest possible scale offered by string theory.As we go along, we discuss in detail Euclidean wormholes, cored and extremal instantons, and how the latter arise from 5d Reissner-Nordström black holes. We attempt to dispel possible doubts that wormholes contribute to the scalar potential by an explicit calculation. We analyse the role of stabilised dilaton-like moduli. Finally, we argue that Euclidean wormholes may be the objects satisfying the Weak Gravity Conjecture extended to instantons.

show abstract

“…At leading order beyond the Einstein-Hilbert term in the derivative expansion, the IIB effective action is expected to contain [22], [23] We further note that the higher-derivative corrections Eqs. (4.2)-(4.3) must respect the SL(2, Z) of Eq.…”

Section: String Theory Effective Action and Instantonsmentioning

confidence: 93%

String theory dual of the β-deformed gauge theory

Chu

Khoze

2006

J. High Energy Phys.

View full text Add to dashboard Cite

We consider the AdS/CFT correspondence between the β-deformed supersymmetric gauge theory and the type IIB string theory on the Lunin-Maldacena background. Guided by gauge theory results, we modify and extend the supergravity solution of Lunin and Maldacena in two ways. First we make it to be doubly periodic in the deformation parameter, β → β + 1 and β → β + τ 0 , to match the β-periodicity property of the dual gauge theory. Secondly, we reconcile the SL(2, Z) symmetry of the gauge theory, which acts on the constant parameters τ 0 and β, with the SL(2, Z) invariance of the string theory, which involves the dilaton-axion field τ (x). Our proposed modified configuration transforms correctly under the SL(2, Z) of string theory when its parameters are transformed under the SL(2, Z) of the gauge theory. We interpret the resulting configuration as the string theory (rather than supergravity) background which is dual to the β-deformed conformal Yang-Mills. Finally, we check that our string theory background leads to the IIB effective action which is correctly reproduced by instanton calculations on the gauge theory side, carried out at weak coupling, in the large-N limit, but to all orders in the deformation parameter β.

show abstract

Effects of D-instantons

Cited by 484 publications

References 38 publications

Classical gauge instantons from open strings

Classical gauge instantons from open strings

Can gravitational instantons really constrain axion inflation?

String theory dual of the β-deformed gauge theory

Contact Info

Product

Resources

About