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

67 results found

Ahmed SN, Dowker F, Surya S, 2017, Scalar field Green functions on causal sets, CLASSICAL AND QUANTUM GRAVITY, Vol: 34, ISSN: 0264-9381

JOURNAL ARTICLE

Buck M, Dowker F, Jubb I, Sorkin Ret al., 2017, The Sorkin-Johnston state in a patch of the trousers spacetime, CLASSICAL AND QUANTUM GRAVITY, Vol: 34, ISSN: 0264-9381

JOURNAL ARTICLE

Clements K, Dowker F, Wallden P, 2017, Physical Logic

In R.D. Sorkin's framework for logic in physics a clear separation is madebetween the collection of unasserted propositions about the physical world andthe affirmation or denial of these propositions by the physical world. Theunasserted propositions form a Boolean algebra because they correspond tosubsets of an underlying set of spacetime histories. Physical rules ofinference, apply not to the propositions in themselves but to the affirmationand denial of these propositions by the actual world. This physical logic mayor may not respect the propositions' underlying Boolean structure. We provethat this logic is Boolean if and only if the following three axioms hold: (i)The world is affirmed, (ii) Modus Ponens and (iii) If a proposition is deniedthen its negation, or complement, is affirmed. When a physical system isgoverned by a dynamical law in the form of a quantum measure with the rule thatevents of zero measure are denied, the axioms (i) - (iii) prove to be too rigidand need to be modified. One promising scheme for quantum mechanics as quantummeasure theory corresponds to replacing axiom (iii) with axiom (iv) Nature isas fine grained as the dynamics allows.

BOOK CHAPTER

Dowker F, Havlicek V, Lewandowski C, Wilkes Het al., 2017, A 'problem of time' in the multiplicative scheme for the n-site hopper, JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, Vol: 50, ISSN: 1751-8113

JOURNAL ARTICLE

Dowker F, Zalel S, 2017, Evolution of universes in causal set cosmology, COMPTES RENDUS PHYSIQUE, Vol: 18, Pages: 246-253, ISSN: 1631-0705

JOURNAL ARTICLE

Belenchia A, Benincasa DMT, Dowker F, 2016, The continuum limit of a 4-dimensional causal set scalar d'Alembertian, CLASSICAL AND QUANTUM GRAVITY, Vol: 33, ISSN: 0264-9381

JOURNAL ARTICLE

Buck M, Dowker F, Jubb I, Surya Set al., 2015, Boundary terms for causal sets, CLASSICAL AND QUANTUM GRAVITY, Vol: 32, ISSN: 0264-9381

JOURNAL ARTICLE

Benincasa DMT, Borsten L, Buck M, Dowker Fet al., 2014, Quantum information processing and relativistic quantum fields, CLASSICAL AND QUANTUM GRAVITY, Vol: 31, ISSN: 0264-9381

JOURNAL ARTICLE

Dowker F, 2014, The birth of spacetime atoms as the passage of time, FLOW OF TIME, Vol: 1326, Pages: 18-25, ISSN: 0077-8923

JOURNAL ARTICLE

Dowker F, Henson J, Wallden P, 2014, A histories perspective on characterizing quantum non-locality, NEW JOURNAL OF PHYSICS, Vol: 16, ISSN: 1367-2630

JOURNAL ARTICLE

Dowker F, 2013, Introduction to causal sets and their phenomenology, GENERAL RELATIVITY AND GRAVITATION, Vol: 45, Pages: 1651-1667, ISSN: 0001-7701

JOURNAL ARTICLE

Dowker F, 2013, Physics meets the big C, PHYSICS WORLD, Vol: 26, Pages: 20-20, ISSN: 0953-8585

JOURNAL ARTICLE

Dowker F, Glaser L, 2013, Causal set d'Alembertians for various dimensions, CLASSICAL AND QUANTUM GRAVITY, Vol: 30, ISSN: 0264-9381

JOURNAL ARTICLE

Afshordi N, Buck M, Dowker F, Rideout D, Sorkin RD, Yazdi YKet al., 2012, A ground state for the causal diamond in 2 dimensions, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479

JOURNAL ARTICLE

Dowker F, Elizalde E, Kirsten K, 2012, Applications of zeta functions and other spectral functions in mathematics and physics: a special issue in honour of Stuart Dowker's 75th birthday PREFACE, JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, Vol: 45, ISSN: 1751-8113

JOURNAL ARTICLE

Benincasa DMT, Dowker F, Schmitzer B, 2011, The random discrete action for two-dimensional spacetime, CLASSICAL AND QUANTUM GRAVITY, Vol: 28, ISSN: 0264-9381

JOURNAL ARTICLE

Dowker F, 2011, Spacetime discreteness, Lorentz invariance and locality, 5th International Workshop on Decoherence, Information, Complexity and Entropy (DICE) - Space-Time-Matter - Current Issues in Quantum Mechanics and Beyond, Publisher: IOP PUBLISHING LTD, ISSN: 1742-6588

CONFERENCE PAPER

Dowker F, 2011, Useless Qubits in "Relativistic Quantum Information"

I draw attention to previous work that shows that the observablescorresponding to relativistic quantum field modes commonly employed in paperson "relativistic quantum information" cannot be measured by ideal measurements.

JOURNAL ARTICLE

Benincasa DMT, Dowker F, 2010, Scalar Curvature of a Causal Set, PHYSICAL REVIEW LETTERS, Vol: 104, ISSN: 0031-9007

JOURNAL ARTICLE

Contaldi CR, Dowker F, Philpott L, 2010, Polarization diffusion from spacetime uncertainty, Classical and Quantum Gravity, Vol: 27, Pages: 172001-172001, ISSN: 0264-9381

JOURNAL ARTICLE

Dowker F, Henson J, Sorkin RD, 2010, Discreteness and the transmission of light from distant sources, PHYSICAL REVIEW D, Vol: 82, ISSN: 2470-0010

JOURNAL ARTICLE

Dowker F, Johnston S, Sorkin RD, 2010, Hilbert spaces from path integrals, JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, Vol: 43, ISSN: 1751-8113

JOURNAL ARTICLE

Dowker F, Johnston S, Surya S, 2010, On extending the quantum measure, JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, Vol: 43, ISSN: 1751-8113

JOURNAL ARTICLE

Philpott L, Dowker F, Sorkin R, 2009, Massless particle diffusion in causal set theory, 4th International Workshop on Decoherence, Information, Complexity and Entropy (DICE) - From Quantum Mechanics through Complexity to Spacetime - The Role of Emergent Dynamical Structures, Publisher: IOP PUBLISHING LTD, ISSN: 1742-6588

CONFERENCE PAPER

Philpott L, Dowker F, Sorkin RD, 2009, Energy-momentum diffusion from spacetime discreteness, PHYSICAL REVIEW D, Vol: 79, ISSN: 2470-0010

JOURNAL ARTICLE

Dowker F, Ghazi-Tabatabai Y, 2008, Dynamical wavefunction collapse models in quantum measure theory, JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, Vol: 41, ISSN: 1751-8113

JOURNAL ARTICLE

Dowker F, Ghazi-Tabatabai Y, 2008, The Kochen-Specker theorem revisited in quantum measure theory, JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, Vol: 41, ISSN: 1751-8113

JOURNAL ARTICLE

Adler SL, Bassi A, Dowker F, Durr Det al., 2007, The Quantum Universe - Preface, JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, Vol: 40, ISSN: 1751-8113

JOURNAL ARTICLE

Barnett M, Dowker F, Rideout D, 2007, Popescu-Rohrlich boxes in quantum measure theory, JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, Vol: 40, Pages: 7255-7264, ISSN: 1751-8113

JOURNAL ARTICLE

Craig D, Dowker F, Henson J, Major S, Rideout D, Sorkin RDet al., 2007, A Bell inequality analog in quantum measure theory, JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, Vol: 40, Pages: 501-523, ISSN: 1751-8113

JOURNAL ARTICLE

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