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Gedanken experiments with Casimir forces, vacuum energy, and gravity
Casimir force quantum vacuum gravity mass
2011/8/2
Gedanken experiments with Casimir forces, vacuum energy, and gravity.
Quantum gravity corrects QED（图）
Quantum gravity QED
2010/11/30
This week's issue of Nature includes a paper that's remarkable for two reasons: it is about quantum gravity – a topic usually not covered in the journal – and it is written by just one person. Now, af...
Quantum Aspects of Massive Gravity II: Non-Pauli-Fierz Theory
Quantum Aspects of Massive Gravity Non-Pauli-Fierz Theory
2010/12/21
We investigate the non-Pauli-Fierz (nPF) theory, a linearized massive gravity with a generic graviton mass term, which has been ignored due to a ghost in its spectrum and the resultant loss of unitari...
Numerical approach to SUSY quantum mechanics and the gauge/gravity duality
Numerical approach to SUSY quantum mechanics gauge/gravity duality
2011/1/14
We demonstrate that Monte-Carlo simulation is a practical tool to study nonperturbative
aspects of supersymmetric quantum mechanics. As an example we study D0-brane quantum
mechanics in the context ...
The Disconnect Between Quantum Mechanics and Gravity
Disconnect Quantum Mechanics Gravity
2010/12/21
There is a serious disconnect between quantum theory and gravity. It occurs at the level of the very foundations of quantum theory, and is far deeper than just the matter of trying to quantize a non-l...
Quantum Back-Reaction in Scale Invariant Induced Gravity
Quantum Back-Reaction Scale Invariant Induced Gravity
2010/12/20
A quartic, self-interacting potential in the induced gravity framework is known to have a pure
de Sitter attractor for the homogeneous mode. In order to obtain non-zero slow roll parameters
we there...
The Conformal Constraint in Canonical Quantum Gravity
Conformal Constraint Canonical Quantum Gravity
2010/12/17
Perturbative canonical quantum gravity is considered, when coupled to a renormalizable model for matter fields. It is proposed that the functional integral over the dilaton field should be disentangle...
A realist interpretation of quantum mechanics based on undecidability due to gravity
interpretation quantum based undecidability gravity
2010/11/8
We summarize several recent developments suggesting that solving the problem of time in quantum gravity leads to a solution of the measurement problem in quantum mechanics. This approach has been info...
Gravity-analogy in one-dimensional ideal Fermi fluids and Burgers' equation
Gravity-analogy one-dimensional ideal Fermi fluids Burgers' equation
2010/11/11
An hydrodynamic description of a one-dimensional flow of an ideal Fermi fluid is constructed from a semiclassical approximation. For an initially fully degenerate fluid, Euler and continuity hydrodyna...
The U(1) Lattice Gauge Theory Universally Connects All Classical Models with Continuous Variables, Including Background Gravity
Lattice gauge theory Statistical mechanics Quantum information
2010/11/4
We show that the partition function of many classical models with continuous degrees of freedom, e.g. abelian lattice gauge theories and statistical mechanical models, can be written as the partition...
Stability of thin-shell wormholes supported by ordinary matter in Einstein-Maxwell-Gauss-Bonnet gravity
thin-shell wormholes Einstein-Maxwell-Gauss-Bonnet gravity
2010/3/18
Recently in (Phys. Rev. D 76, 087502 (2007) and Phys. Rev. D 77, 089903(E) (2008)) a thin-shell wormhole has been introduced in 5-dimensional Einstein-Maxwell-Gauss-Bonnet (EMGB) gravity which was sup...
Causal Sets: Quantum gravity from a fundamentally discrete spacetime
Quantum gravity discrete spacetime
2010/3/18
In order to construct a quantum theory of gravity, we may have to abandon certain assumptions we were making. In particular, the concept of spacetime as a continuum substratum is questioned. Causal Se...
We apply a recent argument of Verlinde to loop quantum gravity, to conclude that Newton's law of gravity emerges in an appropriate limit and setting. This is possible because the relationship between ...
The questions I have been asked during the 5th International School on Field Theory and Gravitation, have compelled me to give an account of the premises that I consider important for a beginner's app...
Aspects of nonrelativistic quantum gravity
Quantum gravity Black holes Information paradox Testable
2010/7/8
A nonrelativistic approach to quantum gravity is studied. At least for weak gravitational fields it should be a valid approximation. Such an approach can be used to point out problems and prospects in...