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21. Mai 2024 · JAMES M. BARDEEN LYNDEN-BELL has suggested1 that a massive collapsed object may lie at the centre of many galaxies, including our own, and that a continuing flux of matter into such a collapsed object, or “black hole”, may be the source of energy for the non-thermal radiation observed to come from some galactic nuclei. The metric ...
23. Mai 2024 · The theory of unconventional superconductors continues to provide profound puzzles. The crossover between the weakly coupled Bardeen-Cooper-Schrieffer (BCS) state and the strong-pairing Bose-Einstein condensate (BEC) provides a useful perspective on how to address these questions.
13. Mai 2024 · Bardeen ist seit 1961 verheiratet und hat einen Sohn und eine Tochter. Sein Bruder James M. Bardeen ist emeritierter Professor für Astrophysik an der University of Washington. Weblinks. Literatur von und über William Bardeen im Katalog der Deutschen Nationalbibliothek; William Bardeen auf der Website des Fermilab; Vorlage:PhysHistNetw
Vor einem Tag · With James M. Bardeen and Brandon Carter, he proposed the four laws of black hole mechanics, drawing an analogy with thermodynamics. To Hawking's irritation, Jacob Bekenstein, a graduate student of John Wheeler, went further—and ultimately correctly—to apply thermodynamic concepts literally.
Vor einem Tag · 1980 – James Bardeen explains structure in the Universe using cosmological perturbation theory. 1981 – Alan Guth proposes cosmic inflation in order to solve the flatness and horizon problems.
16. Mai 2024 · In this paper, we prove the Double Smeared Null Energy Condition (DSNEC) for the fermionic free theory in 4-dimensional flat Minkowski space-time, extending previous work on the same energy condition for the bosonic case [1] [2] by adapting Fewster and Mistry's method [3] to the energy-momentum tensor T_ {++} T ++.
14. Mai 2024 · In this paper, we invoke a generalized uncertainty principle (GUP) in the symmetry-reduced cosmological Hamiltonian for a universe driven by a quintessence scalar field with potential. Our study focuses on semi-classical regime. In particular, we derive the GUP-distorted Friedmann, Raychaudhuri, and the Klein-Gordon equation.
