Thermal quantum gravity in a general background gauge

Brandt, F. T.; Frenkel, Jacob A.; McKeon, D. G. C.; Sakoda, G. S. S.

doi:10.1103/physrevd.107.085020

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Pos(lattice2023)3441

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2023

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“…(2, 𝑓 2) GR /𝑁 𝑡 6 3 at three different temperatures. Classical GR is known to vary with temperature [13] and quantum GR effects have been found to decrease with temperature [14], consistent with our results.…”

Section: Pos(lattice2023)344supporting

confidence: 92%

Euclidean Weak-Field General Relativity on the Lattice

Bouchard

2023

Proceedings of the 40th International Symposium on Lattice Field Theory — PoS(LATTICE2023)

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A lattice formulation of Euclidean, weak-field, path integral quantized general relativity -the low energy effective theory of quantum gravity -is presented. The lattice formulation allows the generation of a Markov chain of dynamic, vacuum (matter free) spacetimes at non-zero temperature, obtained here using the Metropolis algorithm. The positive action conjecture is implemented on the lattice, ensuring both a probabilistic interpretation of exp(−𝑆 GR ) and that 𝛿(𝑆 GR ) = 0 generates the Einstein field equations. Equilibrated spacetimes are found to have nonzero curvature, a consequence of quantization. Preliminary studies of discretization and finite volume systematic effects, and the variation of vacuum spacetime curvature with temperature are presented. Prospects and future directions, including the combination with the QCD vacuum, are discussed.

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Section: Pos(lattice2023)344supporting

confidence: 92%

Euclidean Weak-Field General Relativity on the Lattice

Bouchard

2023

Proceedings of the 40th International Symposium on Lattice Field Theory — PoS(LATTICE2023)

View full text Add to dashboard Cite

show abstract

Thermal quantum gravity in a general background gauge

Cited by 1 publication

References 35 publications

Euclidean Weak-Field General Relativity on the Lattice

Euclidean Weak-Field General Relativity on the Lattice

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