4 papers
On the initial state of the universe and the time arrow
Carlos Silva, Renan Aragão, Francisco A. Brito
In this paper, we investigate an important issue addressed by several approaches to quantum cosmology, like that based on loop quantum gravity and string theory: the existence of a…
Glueballs Confinement and Cosmological Phase Transitions
Adamu Issifu, Julio C. M. Rocha, Francisco A. Brito +1
We develop a unified framework in which the dynamics of a scalar glueball field, originating from phenomenological nonperturbative QCD confinement, simultaneously governs the decon…
Constraining tachyonic inflationary β-exponential model with Continuous Spontaneous Localization collapse scheme
F. A. Brito, Julio C. M. Rocha, A. S. Lemos +1
In this work, we consider the dynamics of the self-induced collapse of the tachyon wave function in inflationary scenarios. We analyze the modifications on the power spectrum by co…
Extra-Dimensional de Broglie-Bohm Quantum Cosmology
F. A. P. Alves-Júnior, A. S. Lemos, F. A. Brito
In this work, we explore the de Broglie-Bohm Quantum Cosmology for a stiff matter, , anisotropic n-dimensional Universe. One begins by considering a Gaussian wave function…