Thermal correlators in little string theory

DeBoer, Philip A.; Rozali, Moshe

doi:10.1103/physrevd.67.086009

Cited by 16 publications

(23 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…45 In this subsection (see also [155,58]) we will consider the thermodynamics of the near-extremal NS5-brane in type IIA string theory using as a starting point the S-dual description as a near-extremal M5-brane on a transverse circle and the input of the phases obtained from six-dimensional neutral Kaluza-Klein black holes in Section 3. Other interesting work on the thermodynamics of LST can be found in [171,164,172,173,174,175,176,177,178,179,180].…”

Section: Little String Theorymentioning

confidence: 99%

Instabilities of black strings and branes

Harmark¹,

Niarchos²,

Obers³

2007

Class. Quantum Grav.

185

268

View full text Add to dashboard Cite

We review recent progress on the instabilities of black strings and branes both for pure Einstein gravity as well as supergravity theories which are relevant for string theory. We focus mainly on Gregory-Laflamme instabilities. In the first part of the review we provide a detailed discussion of the classical gravitational instability of the neutral uniform black string in higher dimensional gravity. The uniform black string is part of a larger phase diagram of Kaluza-Klein black holes which will be discussed thoroughly. This phase diagram exhibits many interesting features including new phases, non-uniqueness and horizontopology changing transitions. In the second part, we turn to charged black branes in supergravity and show how the Gregory-Laflamme instability of the neutral black string implies via a boost/U-duality map similar instabilities for non-and near-extremal smeared branes in string theory. We also comment on instabilities of D-brane bound states. The connection between classical and thermodynamic stability, known as the correlated stability conjecture, is also reviewed and illustrated with examples. Finally, we examine the holographic implications of the Gregory-Laflamme instability for a number of nongravitational theories including Yang-Mills theories and Little String Theory.

show abstract

Section: Little String Theorymentioning

confidence: 99%

Instabilities of black strings and branes

Harmark¹,

Niarchos²,

Obers³

2007

Class. Quantum Grav.

185

268

View full text Add to dashboard Cite

show abstract

“…Schenker et al 2012;Dijkstra et al 2014) are quite weak and highly model-dependent. Various efforts have been made to explore the 21 cm signatures from the neutral hydrogen present in the IGM during the EoR, and people pin hope on the low frequency radio experiments such as the Precision Array for Probing the Epoch of Re-ionization (PAPER; Parsons et al 2010;Ali et al 2015), the Murchison Widefield Array (MWA; Tingay et al 2013;Ewall-Wice et al 2016), the LOw Frequency ARray (LOFAR; van Haarlem et al 2013), the Long Wavelength Array (LWA; Ellingson et al 2009), as well as the future Hydrogen Epoch of Reionization Array 1 (HERA; DeBoer et al 2016) and the Square Kilometre Array 2 (SKA; Huynh & Lazio 2013). These 21 cm experiments will greatly push forward the frontiers of our understanding on reionization.…”

Section: Introductionmentioning

confidence: 99%

IslandFAST: A Semi-numerical Tool for Simulating the Late Epoch of Reionization

Yue

Chen

2017

ApJ

View full text Add to dashboard Cite

We present the algorithm and main results of our semi-numerical simulation, islandFAST, which is developed from the 21cmFAST (Mesinger et al. 2011) and designed for the late stage of reionization. The islandFAST predicts the evolution and size distribution of the large scale under-dense neutral regions (neutral islands), and we find that the late Epoch of Reionization (EoR) proceeds very fast, showing a characteristic scale of the neutral islands at each redshift. Using islandFAST, we compare the impact of two types of absorption systems, i.e. the large scale under-dense neutral islands versus small scale over-dense absorbers, in regulating the reionization process. The neutral islands dominate the morphology of the ionization field, while the small scale absorbers dominate the mean free path of ionizing photons, and also delay and prolong the reionization process. With our semi-numerical simulation, the evolution of the ionizing background can be derived self-consistently given a model for the small absorbers. The hydrogen ionization rate of the ionizing background is reduced by an order of magnitude in the presence of dense absorbers.

show abstract

“…Even this leakage, however, has been shown in recent years to have a predictable "wedge" signature on the k ⊥ -k plane, limiting the contaminated region to a triangular-shaped region at high k ⊥ and low k (Datta et al 2010;Vedantham et al 2012;Morales et al 2012;Parsons et al 2012b;Trott et al 2012;Thyagarajan et al 2013;Pober et al 2013a;Dillon et al 2014;Hazelton et al 2013;Thyagarajan et al 2015b,a;Liu et al 2014a,b;Chapman et al 2016;Pober et al 2016;Seo & Hirata 2016;Jensen et al 2016;Kohn et al 2016). In fact, the foreground wedge is considered sufficiently robust that some instruments have been designed around it (Pober et al 2014;DeBoer et al 2016;Dillon & Parsons 2016;Neben et al 2016b;Ewall-Wice et al 2016b;Thyagarajan et al 2016), implicitly pursuing a strategy of foreground avoidance where the power spectrum can be measured in relatively uncontaminated Fourier modes outside the wedge. This mitigates the need for extremely detailed models of the foregrounds, providing a conservative path towards early detections of the power spectrum.…”

Section: Introductionmentioning

confidence: 99%

Spherical Harmonic Analyses of Intensity Mapping Power Spectra

Liu

Zhang

Parsons

2016

ApJ

View full text Add to dashboard Cite

Intensity mapping is a promising technique for surveying the large scale structure of our Universe from z = 0 to z ∼ 150, using the brightness temperature field of spectral lines to directly observe previously unexplored portions of out cosmic timeline. Examples of targeted lines include the 21 cm hyperfine transition of neutral hydrogen, rotational lines of carbon monoxide, and fine structure lines of singly ionized carbon. Recent efforts have focused on detections of the power spectrum of spatial fluctuations, but have been hindered by systematics such as foreground contamination. This has motivated the decomposition of data into Fourier modes perpendicular and parallel to the line-of-sight, which has been shown to be a particularly powerful way to diagnose systematics. However, such a method is well-defined only in the limit of a narrow-field, flat-sky approximation. This limits the sensitivity of intensity mapping experiments, as it means that wide surveys must be separately analyzed as a patchwork of smaller fields. In this paper, we develop a framework for analyzing intensity mapping data in a spherical Fourier-Bessel basis, which incorporates curved sky effects without difficulty. We use our framework to generalize a number of techniques in intensity mapping data analysis from the flat sky to the curved sky. These include visibility-based estimators for the power spectrum, treatments of interloper lines, and the "foreground wedge" signature of spectrally smooth foregrounds. arXiv:1609.04401v2 [astro-ph.CO]

show abstract

Thermal correlators in little string theory

Cited by 16 publications

References 32 publications

Instabilities of black strings and branes

Instabilities of black strings and branes

IslandFAST: A Semi-numerical Tool for Simulating the Late Epoch of Reionization

Spherical Harmonic Analyses of Intensity Mapping Power Spectra

Contact Info

Product

Resources

About