PREVALENCE OF SUBSTANCE ABUSE AMONG HIGH SCHOOL STUDENTS IN 2015-2016 ACADEMIC YEAR IN YAZD CITY, IRAN




De Sitter Bra-Ket wormholes

Abstract We study a model for the initial state of the universe based on a gravitational path integral that includes connected geometries which simultaneously produce bra and ket of the wave function.We argue that a natural object to describe this state is the Wigner distribution, which is a function on a classical phase space obtained by a certain

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