scholarly journals More analytic bootstrap: nonperturbative effects and fermions

2019 ◽  
Vol 2019 (8) ◽  
Author(s):  
Soner Albayrak ◽  
David Meltzer ◽  
David Poland
Keyword(s):  
Nonperturbative Effects

THE UNREASONABLE EFFECTIVENESS OF EXPONENTIALLY SUPPRESSED CORRECTIONS IN PRESERVING INFORMATION

2013 ◽  
Vol 22 (12) ◽  
pp. 1342030 ◽  
Author(s):  
KYRIAKOS PAPADODIMAS ◽  
SUVRAT RAJU
Keyword(s):  
Hilbert Space ◽  
Black Hole ◽  
Quantum Mechanics ◽  
Nonperturbative Effects ◽  
Von Neumann Entropy ◽  
Von Neumann ◽  
Information Theoretic ◽  
Black Hole Evaporation ◽  
Strong Subadditivity ◽  
Unreasonable Effectiveness

We point out that nonperturbative effects in quantum gravity are sufficient to reconcile the process of black hole evaporation with quantum mechanics. In ordinary processes, these corrections are unimportant because they are suppressed by e-S. However, they gain relevance in information-theoretic considerations because their small size is offset by the corresponding largeness of the Hilbert space. In particular, we show how such corrections can cause the von Neumann entropy of the emitted Hawking quanta to decrease after the Page time, without modifying the thermal nature of each emitted quantum. Second, we show that exponentially suppressed commutators between operators inside and outside the black hole are sufficient to resolve paradoxes associated with the strong subadditivity of entropy without any dramatic modifications of the geometry near the horizon.

Nonperturbative Effects, in SQM

2004 ◽  
pp. 279-279
Author(s):  
Hideaki Aoyama ◽  
Anatoli Konechny ◽  
V. Lemes ◽  
N. Maggiore ◽  
M. Sarandy ◽  
...  
Keyword(s):  
Nonperturbative Effects

scholarly journals Quadratic gravity: From weak to strong

2016 ◽  
Vol 25 (12) ◽  
pp. 1643004 ◽  
Author(s):  
Bob Holdom ◽  
Jing Ren
Keyword(s):  
General Relativity ◽  
Nonperturbative Effects ◽  
Quantum Gravity ◽  
Quantum Chromodynamics ◽  
Free Theory ◽  
Strongly Interacting ◽  
Quadratic Gravity ◽  
Free Interaction

More than three decades ago quadratic gravity was found to present a perturbative, renormalizable and asymptotically free theory of quantum gravity. Unfortunately, the theory appeared to have problems with a spin-2 ghost. In this essay, we revisit quadratic gravity in a different light by considering the case that the asymptotically free interaction flows to a strongly interacting regime. This occurs when the coefficient of the Einstein–Hilbert term is smaller than the scale [Formula: see text] where the quadratic couplings grow strong. Here quantum chromodynamics (QCD) provides some useful insights. By pushing the analogy with QCD, we conjecture that the nonperturbative effects can remove the naive spin-2 ghost and lead to the emergence of general relativity (GR) in the IR.

UNIVERSALITY OF THE VACUA OF THE STOCHASTIC STABILIZED 2-D QUANTUM GRAVITY

1995 ◽  
Vol 10 (34) ◽  
pp. 2589-2597 ◽  
Author(s):  
OSCAR DIEGO
Keyword(s):  
Nonperturbative Effects ◽  
Quantum Gravity ◽  
Matrix Models ◽  
Stochastic Stabilization ◽  
The Matrix

In this letter we study the universality of the nonperturbative effects and the vacua structure of the stochastic stabilization of the matrix models which defines pure 2-D quantum gravity.

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