On the relation between boundary proposals and hidden symmetries of the extended pre-big bang quantum cosmology

The European Physical Journal C

P. V. Moniz¹  S. Jalalzadeh²  T. Rostami² 

[1] Centro de Matemática e Aplicações-UBI, Covilhã, Portugal;Departmento de Física, Universidade da Beira Interior, 6200, Covilhã, Portugal;Department of Physics, Shahid Beheshti University, G. C., Evin, 19839, Tehran, Iran;

关键词: Quantum Cosmology;    Hamiltonian Constraint;    Hide Symmetry;    Quantum Geometrodynamics;    Dirac Observable;   

DOI  :  10.1140/epjc/s10052-014-3241-4

来源: Springer

【 摘 要 】

A framework associating quantum cosmological boundary conditions to minisuperspace hidden symmetries has been introduced in Jalalzadeh and Moniz (Phys Rev D 89:083504, 2014). The scope of the application was, notwithstanding the novelty, restrictive because it lacked a discussion involving realistic matter fields. Therefore, in the present letter, we extend the framework scope to encompass elements from a scalar–tensor theory in the presence of a cosmological constant. More precisely, it is shown that hidden minisuperspace symmetries present in a pre-big bang model suggest a process from which boundary conditions can be selected.

【 授权许可】

CC BY