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Background Independence and Quantum Causal Structure [PDF]
Quantum, 2022 One of the key ways in which quantum mechanics differs from relativity is that it requires a fixed background reference frame for spacetime. In fact, this appears to be one of the main conceptual obstacles to uniting the two theories.
Lachlan Parker, Fabio Costa
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Background-independent composite gravity [PDF]
Classical and Quantum Gravity, 2021 Abstract We explore a background-independent model of composite gravity. In a mean-field approximation, the vacuum expectation value of the composite metric satisfies Einstein’s equations (with corrections) as a consistency condition. A gravitational interaction then emerges in vacuum correlation functions.
Austin Batz, Joshua Erlich, Luke Mrini
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Space–Time Physics in Background-Independent Theories of Quantum Gravity
Universe, 2021 Background independence is often emphasized as an important property of a quantum theory of gravity that takes seriously the geometrical nature of general relativity.
Martin Bojowald
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Quantum Gravity: A Fluctuating Point of View
Frontiers in Physics, 2021 In this contribution, we discuss the asymptotic safety scenario for quantum gravity with a functional renormalization group approach that disentangles dynamical metric fluctuations from the background metric.
Jan M. Pawlowski +3 more
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Background Independence in Gauge Theories [PDF]
Annales Henri Poincaré, 2020 AbstractClassical field theory is insensitive to the split of the field into a background configuration and a dynamical perturbation. In gauge theories, the situation is complicated by the fact that a covariant (w.r.t. the background field) gauge fixing breaks this split independence of the action.
Taslimitehrani, M., Zahn, J.
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Signal-Independent Background Calibration with Fast Convergence Speed in Pipeline-SAR ADC
Micromachines, 2023 This brief proposes a signal-independent background calibration in pipeline-SAR analog-to-digital converters (ADCs) with a convergence-accelerated technique.
Yu-Jun Wang +3 more
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Null hypothesis test for anomaly detection
Physics Letters B, 2023 We extend the use of Classification Without Labels for anomaly detection with a hypothesis test designed to exclude the background-only hypothesis. By testing for statistical independence of the two discriminating dataset regions, we are able to exclude ...
Jernej F. Kamenik, Manuel Szewc
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From the concept of Independence to the questioning of its use in practice: scoping review
Enfermería Global, 2022 Background: Independence is a widely used concept by the most practical areas of health knowledge, being essential to know its real meaning for subsequent application.
Andreia Lima +5 more
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General Relativity and Gravitation, 2011 Forthcoming in General Relativity and ...
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Three-point functions in N $$ \mathcal{N} $$ = 4 SYM at finite N c and background independence
Journal of High Energy Physics, 2020 We compute non-extremal three-point functions of scalar operators in N $$ \mathcal{N} $$ = 4 super Yang-Mills at tree-level in g YM and at finite N c , using the operator basis of the restricted Schur characters.
Ryo Suzuki
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