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pro vyhledávání: '"Dowker, A."'
Autor:
Buoninfante, Luca, Knorr, Benjamin, Kumar, K. Sravan, Platania, Alessia, Anselmi, Damiano, Basile, Ivano, Bjerrum-Bohr, N. Emil J., Brandenberger, Robert, González, Mariana Carrillo, Davis, Anne-Christine, Dittrich, Bianca, Di Vecchia, Paolo, Donoghue, John F., Dowker, Fay, Dvali, Gia, Eichhorn, Astrid, Giddings, Steven B., Gnecchi, Alessandra, Gubitosi, Giulia, Heisenberg, Lavinia, Kallosh, Renata, Koshelev, Alexey S., Liberati, Stefano, Modesto, Leonardo, Moniz, Paulo, Oriti, Daniele, Papadoulaki, Olga, Pawlowski, Jan M., Percacci, Roberto, Rachwał, Lesław, Sakellariadou, Mairi, Salvio, Alberto, Stelle, Kellogg, Surya, Sumati, Tseytlin, Arkady, Turok, Neil, Van Riet, Thomas, Woodard, Richard P.
To deepen our understanding of Quantum Gravity and its connections with black holes and cosmology, building a common language and exchanging ideas across different approaches is crucial. The Nordita Program "Quantum Gravity: from gravitational effect
Externí odkaz:
http://arxiv.org/abs/2412.08696
Autor:
Dowker, J. S.
A recent numerical evaluation of the spherical universal log coefficient in the Maxwell free--energy and its decomposition into bulk and edge contributions via a bounded hyperbolic geometry mode calculation is shown to be equivalent to an existing co
Externí odkaz:
http://arxiv.org/abs/2406.15434
Autor:
Dowker, J. S.
Some exact high temperature expansions are derived using a temperature inversion symmetry of the internal energy for conformal scalars and spinors on the Einstein Universe.
Comment: 5 pages
Comment: 5 pages
Externí odkaz:
http://arxiv.org/abs/2403.09576
Autor:
Dowker, J. S.
An oldish question is resurrected concerning the significance of the ambiguous `b-type' terms encountered in calculations of the vacuum, Casimir energy on the Einstein Universe for conformally coupled scalar fields. Some remarks in the literature are
Externí odkaz:
http://arxiv.org/abs/2403.03817
Autor:
Dowker, J. S.
Making use of an 1847 result of Newman, a (known) closed formula for a log-sine integral is rapidly obtained in terms of Riemann Zeta and Clausen functions.
Comment: 4 pages
Comment: 4 pages
Externí odkaz:
http://arxiv.org/abs/2403.14644
Publikováno v:
Phys. Rev. D 109, 106014 (2024)
Causal set theory is an approach to quantum gravity in which spacetime is fundamentally discrete at the Planck scale and takes the form of a Lorentzian lattice, or "causal set", from which continuum spacetime emerges in a large-scale (low-energy) app
Externí odkaz:
http://arxiv.org/abs/2402.08555
Autor:
Dowker, J. S.
The contribution, E, of hyperbolic elements to the scalar Casimir energy on a compact quotient of the upper half hyperbolic plane is computed for a propagation operator conformal in three dimensions. Due to the proliferation of prime closed geodesics
Externí odkaz:
http://arxiv.org/abs/2402.04107
Autor:
Dowker, J. S.
The contribution of elliptic fixed points to the scalar Casimir energy on compact quotients of the upper half hyperbolic plane is computed for a propagation operator conformal in three dimensions. The expression involves derivatives of two-dimensiona
Externí odkaz:
http://arxiv.org/abs/2311.12708
Autor:
Dowker, J. S.
It is shown that the functional determinant ($\sim$ effective action) for a scalar field propagating on the mixed signature product of unit spheres, S$^q\times$S$^p$, according to the GJMS operator, depends, if $d$ is odd, only on $d=p+q$ and on whet
Externí odkaz:
http://arxiv.org/abs/2310.12027
Autor:
Dowker, J. S.
The Dirac APS eta invariant on a Berger sphere of dimension $2n-1$ is discovered, numerically, to coincide, up to spin factors, with the Dirac conformal anomaly on a round sphere of even dimension, $n$. The analytical expression, given in terms of a
Externí odkaz:
http://arxiv.org/abs/2307.03100