Results 71 to 80 of about 35,096 (197)
From amplitudes to analytic wavefunctions
Journal of High Energy PhysicsThe field-theoretic wavefunction has received renewed attention with the goal of better understanding observables at the boundary of de Sitter spacetime and studying the interior of Minkowski or general FLRW spacetime.
Mang Hei Gordon Lee
doaj +1 more source
Noûs, EarlyView.ABSTRACT How should we understand the duration of a pleasant or unpleasant sensation, insofar as its duration modulates how good or bad the experience is overall? Given that we seem able to distinguish between subjective and objective duration and that how well or badly someone's life goes is naturally thought of as something to be assessed from her ...
Andreas L. Mogensen
wiley +1 more source
Rigorous reconstruction of gluon propagator in the presence of complex singularities
SciPost Physics Proceedings, 2022 It has been suggested that the Landau-gauge gluon propagator has complex singularities, which invalidates the K\"all\'en-Lehmann spectral representation.
Yui Hayashi, Kei-Ichi Kondo
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Spacetime Singularities in String and its Low Dimensional Effective Theory
, 2010 Spacetime singularities are studied in both the $D+d$-dimensional string theory and its $D$-dimensional effective theory, obtained by the Kaluza-Klein compactification.
ANDREAS TZIOLAS +8 more
core +1 more source
Winding Strings in Singular Spacetimes
, 2005 Evolution of winding strings in spacetimes with cycles whose proper lengths depend on time is examined. It was established earlier that extended objects wrapping the shrinking dimension in compactified Milne spacetime enjoy classically nonsingular evolution. Extensions of this observation to other spacetimes are discussed.
Pawłowski, M. +2 more
openaire +3 more sources
Quantum Singularities in Conformally Static Spacetimes [PDF]
, 2014 After a brief review of the standard definition and analysis of classical singularities in general relativistic spacetimes, and of quantum singularities in static spacetimes with timelike classical singularities, an extension of quantum singularities to conformally static spacetimes is summarized and applied to two test cases.
Konkowski, Deborah A. +1 more
openaire +2 more sources
Aggregation and the Structure of Value
Noûs, EarlyView.ABSTRACT Roughly, the view I call “Additivism” sums up value across time and people. Given some standard assumptions, I show that Additivism follows from two principles. The first says that how lives align in time cannot, in itself, matter. The second says, roughly, that a world cannot be better unless it is better within some period or another.
Weng Kin San
wiley +1 more source
Covariant singularities in quantum field theory and quantum gravity
Nuclear Physics B, 2021 It is rather well-known that spacetime singularities are not covariant under field redefinitions. A manifestly covariant approach to singularities in classical gravity was proposed in [1].
Roberto Casadio +2 more
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Noûs, EarlyView.ABSTRACT In several articles, McCall and Lowe have claimed that endurantism and perdurantism are “equivalent.” From this, they conclude that there is no fact of the matter as to whether we live in an endurantist world or in a perdurantist world. In this paper, I use the notion of Morita equivalence to show in which precise sense, McCall and Lowe's ...
Joshua Babic
wiley +1 more source
A Flaw in Sider's Vagueness Argument for Perdurantism: Endurantism Endures
Analytic Philosophy, EarlyView.ABSTRACT Sider's vagueness argument for perdurantism (2001: 126ff.) has long been seen as one of the most powerful, or perhaps the most powerful, in the perdurantist's arsenal. In its absence, the case against endurantism is significantly weakened. Despite its age, there is still no generally agreed view on its worth.
Harold W. Noonan
wiley +1 more source