Work

Spacetime quantum actions

Year: 2021

Type: article

Abstract: We propose a formulation of quantum mechanics in an extended Fock space in which a tensor product structure is applied to time. Subspaces of histories consistent with the dynamics of a particular theory are defined by a direct quantum generalization of the corresponding classical action. The diagonalization of such quantum actions enables us to recover the predictions of conventional quantum mechanics and reveals an extended unitary equivalence between all physical theories. Quantum correlations and coherent effects across time and between distinct theories acquire a rigorous meaning, which is encoded in the rich temporal structure of physical states. Connections with modern relativistic schemes and the path integral formulation also emerge.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.103.065011

Authors: N. L. Diaz, J. M. Matera, R. Rossignoli

Institutions: Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Física La Plata, Universidad Nacional de La Plata, Comisión de Investigaciones Científicas

Language: English

Topic: Quantum Mechanics and Applications

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Consejo Nacional de Investigaciones Científicas y Técnicas, Comisión de Investigaciones Científicas

Award: G2346467208