Imperial College London

Prof Fay Dowker

Faculty of Natural SciencesDepartment of Physics

Professor of Theoretical Physics
 
 
 
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Contact

 

f.dowker

 
 
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Assistant

 

Mrs Graziela De Nadai-Sowrey +44 (0)20 7594 7843

 
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Location

 

Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

69 results found

DOWKER HF, 1993, SO(4)-INVARIANT STATES IN QUANTUM COSMOLOGY, CLASSICAL AND QUANTUM GRAVITY, Vol: 10, Pages: 1435-1446, ISSN: 0264-9381

Journal article

ALTY LJ, DEATH PD, DOWKER HF, 1992, QUANTUM WORMHOLE STATES AND LOCAL SUPERSYMMETRY, PHYSICAL REVIEW D, Vol: 46, Pages: 4402-4412, ISSN: 0556-2821

Journal article

DOWKER HF, HALLIWELL JJ, 1992, QUANTUM-MECHANICS OF HISTORY - THE DECOHERENCE FUNCTIONAL IN QUANTUM-MECHANICS, PHYSICAL REVIEW D, Vol: 46, Pages: 1580-1609, ISSN: 2470-0010

Journal article

DOWKER F, GREGORY R, TRASCHEN J, 1992, EUCLIDEAN BLACK-HOLE VORTICES, PHYSICAL REVIEW D, Vol: 45, Pages: 2762-2771, ISSN: 0556-2821

Journal article

DOWKER HF, LAFLAMME R, 1991, WORMHOLES AND GRAVITONS, NUCLEAR PHYSICS B, Vol: 366, Pages: 209-232, ISSN: 0550-3213

Journal article

DEATH PD, DOWKER HF, HUGHES DI, 1991, SUPERSYMMETRIC QUANTUM WORMHOLE STATES, 5TH SEMINAR ON QUANTUM GRAVITY, Publisher: WORLD SCIENTIFIC PUBL CO PTE LTD, Pages: 124-143

Conference paper

DOWKER HF, 1990, ELECTROMAGNETIC WORMHOLE VERTEX, NUCLEAR PHYSICS B, Vol: 331, Pages: 194-212, ISSN: 0550-3213

Journal article

Barton C, Counsell A, Dowker F, Gould DSW, Jubb I, Taylor Get al., Horizon Molecules in Causal Set Theory

We propose a new definition of "horizon molecules" in Causal Set Theoryfollowing pioneering work by Dou and Sorkin. The new concept applies for anycausal horizon and its intersection with any spacelike hypersurface. In thecontinuum limit, as the discreteness scale tends to zero, the leading behaviourof the expected number of horizon molecules is shown to be the area of thehorizon in discreteness units, up to a dimension dependent factor of order one.We also determine the first order corrections to the continuum value, and showhow such corrections can be exploited to obtain further geometrical informationabout the horizon and the spacelike hypersurface from the causal set.

Journal article

Dowker F, Sorkin RD, Symmetry-breaking and zero-one laws

We offer further evidence that discreteness of the sort inherent in a causalset cannot, in and of itself, serve to break Poincar{\'e} invariance. Inparticular we prove that a Poisson sprinkling of Minkowski spacetime cannotendow spacetime with a distinguished spatial or temporal orientation, or with adistinguished lattice of spacetime points, or with a distinguished lattice oftimelike directions (corresponding respectively to breakings ofreflection-invariance, translation-invariance, and Lorentz invariance). Alongthe way we provide a proof from first principles of the zero-one law on whichour new arguments are based.

Journal article

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