Results 1 
5 of
5
TimeSymmetrized Counterfactuals in Quantum Theory,’ TelAviv University preprint TAUP
, 1997
"... Counterfactuals in quantum theory are briefly reviewed and it is argued that they are very different from counterfactuals considered in the general philosophical literature. The issue of time symmetry of quantum counterfactuals is considered and a novel timesymmetric definition of quantum counterfa ..."
Abstract

Cited by 18 (4 self)
 Add to MetaCart
(Show Context)
Counterfactuals in quantum theory are briefly reviewed and it is argued that they are very different from counterfactuals considered in the general philosophical literature. The issue of time symmetry of quantum counterfactuals is considered and a novel timesymmetric definition of quantum counterfactuals is proposed. This definition is applied for analyzing several controversies related to quantum counterfactuals. 1 There are very many philosophical discussions on the concept of counterfactuals and especially on the time’s arrow in counterfactuals. There is also a considerable literature on counterfactual in quantum theory. In order to be a helpful tool in quantum theory counterfactuals have to be rigorously defined. Unfortunately, the concept of counterfactuals is vague 1 and this leads to several controversies. I, however, believe that since quantum counterfactuals appear in a much narrow context than in general discussions on counterfactuals, they can be defined unambiguously. I will briefly review counterfactuals in quantum theory and will propose a rigorous definition which can clarify several issues, in particular, those related to the timesymmetry of quantum counterfactuals.
Spacetime counterfactuals
, 1998
"... A definition is proposed to give precise meaning to the counterfactual statements that often appear in discussions of the implications of quantum mechanics. Of particular interest are counterfactual statements which involve events occurring at spacelike separated points, which do not have an absolu ..."
Abstract

Cited by 2 (0 self)
 Add to MetaCart
A definition is proposed to give precise meaning to the counterfactual statements that often appear in discussions of the implications of quantum mechanics. Of particular interest are counterfactual statements which involve events occurring at spacelike separated points, which do not have an absolute time ordering. Some consequences of this definition are discussed. 1
Does Quantum Mechanics imply influences
, 1998
"... acting backward in time in impact series experiments? ..."
(Show Context)
1 Submiitted to PSA1998TIMESYMMETRIZED COUNTERFACTUALS IN QUANTUM THEORY
, 1998
"... Counterfactuals in quantum theory are briefly reviewed and it is argued that they are very different from counterfactuals considered in the general philosophical literature. The issue of time symmetry of quantum counterfactuals is considered and a novel timesymmetric definition of quantum counterfa ..."
Abstract
 Add to MetaCart
(Show Context)
Counterfactuals in quantum theory are briefly reviewed and it is argued that they are very different from counterfactuals considered in the general philosophical literature. The issue of time symmetry of quantum counterfactuals is considered and a novel timesymmetric definition of quantum counterfactuals is proposed. This definition is applied for analyzing several controversies related to quantum counterfactuals. 2 There are very many philosophical discussions on the concept of counterfactuals and especially on the time’s arrow in counterfactuals. There is also a considerable literature on counterfactual in quantum theory. In order to be a helpful tool in quantum theory counterfactuals have to be rigorously defined. Unfortunately, the concept of counterfactuals is vague 1 and this leads to several controversies. I, however, believe that since quantum counterfactuals appear in a much narrow context than in general discussions on counterfactuals, they can be defined unambiguously. I will briefly review counterfactuals in quantum theory and will propose a rigorous definition which can clarify several issues, in particular, those related to the timesymmetry of quantum counterfactuals.
unknown title
"... In the paper the proof of the nonlocality of quantum mechanics, given recently by H. Stapp and D. Bedford, and appealing to the GHZ example, is analyzed. The proof does not contain any explicit assumption of realism, but instead it uses formal methods and techniques of the Lewis calculus of counter ..."
Abstract
 Add to MetaCart
(Show Context)
In the paper the proof of the nonlocality of quantum mechanics, given recently by H. Stapp and D. Bedford, and appealing to the GHZ example, is analyzed. The proof does not contain any explicit assumption of realism, but instead it uses formal methods and techniques of the Lewis calculus of counterfactuals. To ascertain the validity of the proof, a formal semantic model for counterfactuals is constructed. With the help of this model it can be shown that the proof is faulty, because it appeals to the unwarranted principle of “Elimination of Eliminated Conditions ” (EEC). As an additional way of showing unreasonableness of the EEC assumption, it is argued that yet another alleged and highly controversial Stapp’s proof of nonlocality of QM, using the Hardy example, can be made almost trivial with the help of EEC. Next the question is considered whether the validity of the proof in the GHZ case can be restored by adopting the assumption of “partial realism”. It is argued that although this assumption makes the crucial step of the original reasoning valid, it nevertheless renders another important transition unjustified, therefore the entire reasoning collapses.