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Professor Artur Ekert FRS

Professor

Research theme

  • Quantum information and computation

Sub department

  • Atomic and Laser Physics
artur.ekert@physics.ox.ac.uk
Clarendon Laboratory
Wikipedia
Lecture: Introduction to Quantum Information Science
  • About
  • Publications

Covariant quantum field theory of tachyons

Physical Review D American Physical Society 110:1 (2024) 15006

Authors:

Jerzy Paczos, Kacper Dębski, Szymon Cedrowski, Szymon Charzyński, Krzysztof Turzyński, Artur Ekert, Andrzej Dragan

Abstract:

Three major misconceptions concerning quantized tachyon fields, the energy spectrum unbounded from below, the frame-dependent and unstable vacuum state, and the noncovariant commutation rules, are shown to be a result of misrepresenting the Lorentz group in a too small Hilbert space. By doubling this space we establish an explicitly covariant framework that allows for the proper quantization of the tachyon fields eliminating all of these issues. Our scheme that is derived to maintain the relativistic covariance also singles out the two-state formalism developed by Aharonov et al. [Phys. Rev. 134, B1410 (1964)PHRVAO0031-899X10.1103/PhysRev.134.B1410] as a preferred interpretation of the quantum theory.
More details from the publisher
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The Quest for Qubits

ACADEMIA - The magazine of the Polish Academy of Sciences Polish Academy of Sciences Chancellery (2024) 22-24-22-24
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W krainie kubitów

ACADEMIA - magazyn Polskiej Akademii Nauk Polish Academy of Sciences Chancellery (2024) 22-24-22-24
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Reply to the Comment on ‘Quantum principle of relativity’

New Journal of Physics IOP Publishing 25:12 (2023) 128002

Authors:

Andrzej Dragan, Artur Ekert
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Reply to the comment on "Quantum principle of relativity"

(2023)

Authors:

Andrzej Dragan, Artur Ekert
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