Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Lal, Raymond"'
Publikováno v:
In special issue on Foundations of Probability Theory in Psychology and Beyond, Journal of Mathematical Psychology, 74: 58--65, 2016
We study the set of no-signalling empirical models on a measurement scenario, and show that the combinatorial structure of the no-signalling polytope is completely determined by the possibilistic information given by the support of the models. This i
Externí odkaz:
http://arxiv.org/abs/1603.07735
Autor:
Lal, Raymond Ashwin
Categorical quantum mechanics is a way of formalising the structural features of quantum theory using category theory. It uses compound systems as the primitive notion, which is formalised by using symmetric monoidal categories. This leads to an eleg
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.581023
Publikováno v:
24th EACSL Annual Conference on Computer Science Logic (CSL 2015), Leibniz International Proceedings in Informatics (LIPIcs), 41: 211-228, 2015
Contextuality is a key feature of quantum mechanics that provides an important non-classical resource for quantum information and computation. Abramsky and Brandenburger used sheaf theory to give a general treatment of contextuality in quantum theory
Externí odkaz:
http://arxiv.org/abs/1502.03097
Autor:
Janotta, Peter, Lal, Raymond
Publikováno v:
EPTCS 171, 2014, pp. 84-89
The framework of generalized probabilistic theories (GPT) is a widely-used approach for studying the physical foundations of quantum theory. The standard GPT framework assumes the no-restriction hypothesis, in which the state space of a physical theo
Externí odkaz:
http://arxiv.org/abs/1412.8524
Publikováno v:
New J. Phys. 16, 113043 (2014)
Bayesian networks provide a powerful tool for reasoning about probabilistic causation, used in many areas of science. They are, however, intrinsically classical. In particular, Bayesian networks naturally yield the Bell inequalities. Inspired by this
Externí odkaz:
http://arxiv.org/abs/1405.2572
Autor:
Lal, Raymond, Teh, Nicholas J.
Category theory has become central to certain aspects of theoretical physics. Bain [Synthese, 190:1621--1635 (2013)] has recently argued that this has significance for ontic structural realism. We argue against this claim. In so doing, we uncover two
Externí odkaz:
http://arxiv.org/abs/1404.3049
Autor:
Cavalcanti, Eric G., Lal, Raymond
Publikováno v:
J. Phys. A: Math. Theor. 47, 424018 (2014)
Bell's 1964 theorem causes a severe problem for the notion that correlations require explanation, encapsulated in Reichenbach's Principle of Common Cause. Despite being a hallmark of scientific thought, dropping the principle has been widely regarded
Externí odkaz:
http://arxiv.org/abs/1311.6852
Publikováno v:
Phys. Rev. Lett. 112, 250403 (2014)
According to a recent no-go theorem (M. Pusey, J. Barrett and T. Rudolph, Nature Physics 8, 475 (2012)), models in which quantum states correspond to probability distributions over the values of some underlying physical variables must have the follow
Externí odkaz:
http://arxiv.org/abs/1310.8302
Autor:
Janotta, Peter, Lal, Raymond
Publikováno v:
Phys. Rev. A 87, 052131 (2013)
The framework of generalized probabilistic theories (GPTs) is a popular approach for studying the physical foundations of quantum theory. The standard framework assumes the no-restriction hypothesis, in which the state space of a physical theory dete
Externí odkaz:
http://arxiv.org/abs/1302.2632
Autor:
Coecke, Bob, Lal, Raymond
Publikováno v:
Phys. Rev. Lett. 108, 200403 (2012)
There is an incompatibility between the symmetries of causal structure in relativity theory and the signaling abilities of probabilistic devices with inputs and outputs: while time-reversal in relativity will not introduce the ability to signal betwe
Externí odkaz:
http://arxiv.org/abs/1108.1988