37 citations · 75 across the 11 of their papers we have counts for
13 papers
Gauge Matters More Than Curvature
Henrique Gomes, Bryan W Roberts
Recent orthodoxy, which we call Curvature Fundamentalism, posits that the field strength on spacetime exhausts the physically significant content of electromagnetism, at least…
Heat as a gauge connection
Bryan W Roberts
We show that heat defines a gauge connection on a line bundle over work configurations. Vanishing curvature is equivalent to the local existence of entropy and temperature function…
Reversing the Arrow of Time
Bryan W Roberts
The arrow of time refers to the curious asymmetry that distinguishes the future from the past. Reversing the Arrow of Time argues that there is an intimate link between the symmetr…
The Gauge Argument: A Noether Reason
Bryan W. Roberts, Henrique Gomes, Jeremy Butterfield
Why is gauge symmetry so important in modern physics, given that one must eliminate it when interpreting what the theory represents? In this paper we discuss the sense in which gau…
Time-energy uncertainty does not create particles
Bryan W. Roberts, Jeremy Butterfield
In this contribution in honour of Paul Busch, we criticise the claims of many expositions that the time-energy uncertainty principle allows both a violation of energy conservation,…
Observables, Disassembled
Bryan W. Roberts
This paper argues that non-self-adjoint operators can be observables. There are only four ways for this to occur: non-self-adjoint observables can either be normal operators, or be…
Three myths about time reversal in quantum theory
Bryan W. Roberts
Many have suggested that the transformation standardly referred to as 'time reversal' in quantum theory is not deserving of the name. I argue on the contrary that the standard defi…
Kähler Representation Theory
Bryan W. Roberts, Nicholas J. Teh
We show that Jordan-Lie-Banach algebras, which provide an abstract characterization of quantum theory equivalent to C^* algebras, can always be canonically represented in terms of…
Disregarding the 'Hole Argument'
Bryan W. Roberts
Jim Weatherall has suggested that Einstein's hole argument, as presented by Earman and Norton (1987), is based on a misleading use of mathematics. I argue on the contrary that Weat…
A general perspective on time observables
Bryan W. Roberts
I propose a general geometric framework in which to discuss the existence of time observables. This frameworks allows one to describe a local sense in which time observables always…
Three Merry Roads to T-Violation
Bryan W. Roberts
This paper is a tour of how the laws of nature can distinguish between the past and the future, or be T-violating. I argue that, in terms of the basic argumentative structure, ther…
Comment on Ashtekar: Generalization of Wigner's Principle
Bryan W. Roberts
Ashtekar (2013) has illustrated that two of the available roads to testing for time asymmetry can be generalized beyond the structure of quantum theory, to much more general formul…
Kramers degeneracy without eigenvectors
Bryan W. Roberts
Wigner gave a well-known proof of Kramers degeneracy, for time reversal invariant systems containing an odd number of half-integer spin particles. But Wigner's proof relies on the…