Varying dilaton as a tracer of classical string interactions

Dodelson, Matthew; Silverstein, Eva; Torroba, Gonzalo

doi:10.1103/physrevd.96.066011

Cited by 15 publications

(29 citation statements)

References 15 publications

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“…The advanced scenario depicted in figure 1 involves C +Ĉ splitting off early, which implies a relative factor of g O (∆X + * ) compared to scattering at the origin, with ∆X + * = X * / √ 2 = 2 √ 2πEBα . We analyze this in [11], finding agreement with this prediction. Moreover, the linear dilaton affects the spreading prediction in a calculable way, degrading it for sufficiently large V − p + D ∼ √ 2V − EB.…”

Section: The Q = 0 Casesupporting

confidence: 73%

“…Finally, we note that there may be effects in curved spacetime which affect the range of spreading. A linear dilaton gradient has an interesting calculable effect discussed in [11], and something similar may arise in curved spacetime. As in [3], one may most directly relate flat spacetime results to those in a black hole in the near-horizon Rindler region, putting the strings in their light cone ground state there.…”

Section: The Size Of the Amplitudementioning

confidence: 99%

“…In this regime, moreover, a simple tree level quantum field theory analogue model would not interact as strongly at this separation, provided that we identify its four-point couplings with the amplitudes of certain sub-processes in the string theory (one of which is Regge-soft). In order to test the spreading interpretation further, we summarize a result of [11] in a weakly varying dilaton background, which yields string coupling dependence consistent with scattering at this peak wavepacket separation. As a result, the longitudinal spreading prediction survives a substantial test.…”

Section: Introduction and Setupmentioning

confidence: 99%

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Long-range nonlocality in six-point string scattering: Simulation of black hole infallers

Dodelson

Silverstein

2017

Phys. Rev. D

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We set up a tree-level six point scattering process in which two strings are separated longitudinally such that they could only interact directly via a non-local spreading effect such as that predicted by light cone gauge calculations and the Gross-Mende saddle point. One string, the 'detector', is produced at a finite time with energy E by an auxiliary 2 → 2 sub-process, with kinematics such that it has sufficient resolution to detect the longitudinal spreading of an additional incoming string, the 'source'. We test this hypothesis in a gauge-invariant S-matrix calculation convolved with an appropriate wavepacket peaked at a separation X between the central trajectories of the source and produced detector. The amplitude exhibits support for scattering at the predicted longitudinal separation X ∼ α E, in sharp contrast to the analogous quantum field theory amplitude (whose support manifestly traces out a tail of the position-space wavefunction). The effect arises in a regime in which the string amplitude is not obtained as a convergent sum of such QFT amplitudes, and has larger amplitude than similar QFT models (with the same auxiliary four point amplitude). In a linear dilaton background, the amplitude depends on the string coupling as expected if the scattering is not simply occuring on the wavepacket tail in string theory. This manifests the scale of longitudinal spreading in a gauge-invariant S-matrix amplitude, in a calculable process with significant amplitude. It simulates a key feature of the dynamics of time-translated horizon infallers.

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Section: The Q = 0 Casesupporting

confidence: 73%

Section: The Size Of the Amplitudementioning

confidence: 99%

Section: Introduction and Setupmentioning

confidence: 99%

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Long-range nonlocality in six-point string scattering: Simulation of black hole infallers

Dodelson

Silverstein

2017

Phys. Rev. D

Self Cite

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“…In particular, alternatives to classical black hole event horizons such as firewalls (Almheiri et al 2013), fuzzballs, (e.g., Mathur & Turton 2014), or other exotic byproducts of quantum gravitational collapse (e.g., Giddings 2014;Dodelson & Silverstein 2015) have been discussed in the literature. It is generally believed that, in lieu of an event horizon, accretion onto (or scattering off) such exotic byproducts may have astrophysical observable consequences that distinguish them from classical black holes (Broderick, Loeb & Narayan 2009;Pen & Broderick 2014;Broderick et al 2015).…”

Section: Introductionmentioning

confidence: 99%

‘Firewall’ phenomenology with astrophysical neutrinos

Afshordi¹,

Yazdi²

2016

Class. Quantum Grav.

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One of the most fundamental features of a black hole in general relativity is its event horizon: a boundary from which nothing can escape. There has been a recent surge of interest in the nature of these event horizons and their local neighbourhoods. In an attempt to resolve black hole information paradox(es), and more generally, to better understand the path towards quantum gravity, "firewalls" have been proposed as an alternative to black hole event horizons. In this paper, we explore the phenomenological implications of black holes possessing a surface or "firewall", and predict a potentially detectable signature of these firewalls in the form of a high energy astrophysical neutrino flux. We compute the spectrum of this neutrino flux in different models and show that it is a possible candidate for the source of the PeV neutrinos recently detected by IceCube. This opens up a new area of research, bridging the non-perturbative physics of quantum gravity with the observational black hole and high energy astrophysics.

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“…Intuitively, the entanglement entropy counts the number of 13 As reviewed recently in [64], on the cylinder the spacetime momenta are shifted from those on the plane, which include an additional piece ∝ i √ cφ.…”

Section: A Lattice Model With Volume Law Entanglementmentioning

confidence: 99%

De Sitter holography and entanglement entropy

Dong

Silverstein

Torroba

2018

J. High Energ. Phys.

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119

132

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We propose a new example of entanglement knitting spacetime together, satisfying a series of checks of the corresponding von Neumann and Renyi entropies. The conjectured dual of de Sitter in d + 1 dimensions involves two coupled CFT sectors constrained by residual d-dimensional gravity. In the d = 2 case, the gravitational constraints and the CFT spectrum are relatively tractable. We identify a finite portion of each CFT Hilbert space relevant for de Sitter. Its maximum energy level coincides with the transition to the universal Cardy behavior for theories with a large central charge and a sparse light spectrum, derived by Hartman, Keller, and Stoica. Significant interactions between the two CFTs, derived previously for other reasons, suggest a maximally mixed state upon tracing out one of the two sectors; we derive this by determining the holographic Renyi entropies. The resulting entanglement entropy matches the Gibbons-Hawking formula for de Sitter entropy, including the numerical coefficient. Finally, we interpret the Gibbons-Hawking horizon entropy in terms of the Ryu-Takayanagi entropy, and explore the time evolution of the entanglement entropy.

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Varying dilaton as a tracer of classical string interactions

Cited by 15 publications

References 15 publications

Long-range nonlocality in six-point string scattering: Simulation of black hole infallers

Long-range nonlocality in six-point string scattering: Simulation of black hole infallers

‘Firewall’ phenomenology with astrophysical neutrinos

De Sitter holography and entanglement entropy

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