336 citations · 943 across the 20 of their papers we have counts for
20 papers
John Bell on 'Subject and Object': an Exchange
Hans Halvorson, Jeremy Butterfield
This three-part paper comprises: (i) a critique by Halvorson of Bell's (1973) paper "Subject and Object"; (ii) a comment by Butterfield; (iii) a reply by Halvorson. An Appendix giv…
Morita Equivalence
Thomas William Barrett, Hans Halvorson
Logicians and philosophers of science have proposed various formal criteria for theoretical equivalence. In this paper, we examine two such proposals: definitional equivalence and…
Independence Conditions for Nets of Local Algebras as Sheaf Conditions
Sander A. M. Wolters, Hans Halvorson
We apply constructions from topos-theoretic approaches to quantum theory to algebraic quantum field theory. Thus a net of operator algebras is reformulated as a functor that maps r…
How is spontaneous symmetry breaking possible?
David John Baker, Hans Halvorson
We pose and resolve a seeming paradox about spontaneous symmetry breaking in the quantum theory of infinite systems. For a symmetry to be spontaneously broken, it must not be imple…
Algebraic Quantum Field Theory
Hans Halvorson, Michael Mueger
Algebraic quantum field theory provides a general, mathematically precise description of the structure of quantum field theories, and then draws out consequences of this structure…
Can quantum cryptography imply quantum mechanics? Reply to Smolin
Hans Halvorson, Jeffrey Bub
Clifton, Bub, and Halvorson (CBH) have argued that quantum mechanics can be derived from three cryptographic, or broadly information-theoretic, axioms. But Smolin disagrees, and he…