Zobrazeno 1 - 10
of 126
pro vyhledávání: '"DASS, P. D."'
Autor:
Dass, N. D. Hari
This chapter explains the concept of \emph{Effective String Theories}(EST), and their success in explaining the results that Yang-Mills flux tubes behave, to a high degree of accuracy, like Bosonic Strings(BST). It describes EST's of L\"uscher and We
Externí odkaz:
http://arxiv.org/abs/2312.10629
Autor:
Dass, N. D. Hari
Through a very careful analysis of Dirac's 1932 paper on the Lagrangian in Quantum Mechanics as well as the second and third editions of his classic book {\it The Principles of Quantum Mechanics}, I show that Dirac's contributions to the birth of the
Externí odkaz:
http://arxiv.org/abs/2003.12683
Autor:
Dass, N. D. Hari, Krishna, R. Rajath
In an earlier publication we had given an exhaustive analysis of the criteria for weak value measurements of pure states to be optimal in the sense considered by Wootters and Fields. We had proved, for arbitrary spin cases, that the measurements are
Externí odkaz:
http://arxiv.org/abs/1804.10792
We apply the notion of \emph{optimality} of measurements for state determination(tomography) as originally given by Wootters and Fields to \emph{weak value tomography} of \emph{pure states}. They defined measurements to be optimal if they 'minimised'
Externí odkaz:
http://arxiv.org/abs/1702.00347
Autor:
Borah, Kaushik, Dass, N. D. Hari
Though John Bell had claimed that his spin-1/2 example of a hidden-variable theory(HV) is an \emph{explicit} counterexample to von Neumann's proof of the non-existence of hidden variable theories empirically equivalent to quantum mechanics, such exam
Externí odkaz:
http://arxiv.org/abs/1611.03826
Autor:
Dass, N. D. Hari, Desiraju, Harini
Based on an examination of the solutions to the Killing Vector equations for the FLRW-metric in co moving coordinates , it is conjectured and proved that the components(in these coordinates) of Killing Vectors, when suitably scaled by functions, are
Externí odkaz:
http://arxiv.org/abs/1511.07142
Autor:
Dass, N. D. Hari
Leggett-Garg inequalities are an important milestone in our quest to bridge the classical-quantum divide. An experimental investigation of these inequalities requires the so called \emph{non-invasive measurements}(NIM). It has become popular to invok
Externí odkaz:
http://arxiv.org/abs/1509.05136
Autor:
Dass, N. D. Hari
Three recent results on weak measurements are presented. They are: i) repeated measurements on a single copy can not provide any information on it and further, that in the limit of very large such measurements, weak measurements have exactly the same
Externí odkaz:
http://arxiv.org/abs/1509.04869
Autor:
Qureshi, Tabish, Dass, N. D. Hari
Publikováno v:
Current Science, 109, 2023 (2015)
Making measurements on single quantum systems is considered difficult, almost impossible if the state is a-priori unknown. Protective measurements suggest a possibility to measure single quantum systems and gain some new information in the process. P
Externí odkaz:
http://arxiv.org/abs/1505.01591
Autor:
Dass, N. D. Hari
Publikováno v:
Quanta 2014 No 3 p47
The issue of ontology in quantum mechanics, or equivalently the issue of the reality of the wave function is critically examined within standard quantum theory. It is argued that though no strict ontology is possible within quantum theory, ingenious
Externí odkaz:
http://arxiv.org/abs/1406.4933