In this work, we present the general differential geometry of a background in which the
space–time has both torsion and curvature with internal symmetries being described by …

In contemporary physics, the model of space–time as the fundamental arena of the universe
is replaced by some authors with the superfluid quantum vacuum. In a vacuum, time is not a …

The purpose of this note… is to sort out my own thoughts… and to solicit ideas from others.
Lloyd N. Trefethen Three mysteries of Gaussian elimination Since 2008, when the first …

I re-examined the notion of the thermodynamic force constructed from the first law of black
hole thermodynamics. In general relativity, the value of the charge (or angular momentum) at …

The discussion of vacuum energy is currently a subject of great theoretical importance,
specially concerning the cosmological constant problem in General Relativity. From …

Fluctuations are omnipresent; they exist in any matter, due either to its quantum nature or to
its nonzero temperature. In the current review, we briefly cover the quantum electrodynamic …

It has been predicted that, if gravitational wave reflectors exist, two such parallel plane
gravitational mirrors separated by an empty gap will interact not only via the well-known …

Zero-point energy is generally known to be unphysical. Casimir effect, however, is often
presented as a counterexample, giving rise to a conceptual confusion. To resolve the …

The accelerated expansion of space was discovered in 1998. It is usually attributed to a new
form of energy, called dark energy. Its amount is described by a cosmological constant Λ, a …

In standard quantum mechanics, the coupling between quantum systems is described by a
potential interaction term in the Hamiltonian. This type of coupling is well‐rooted in nature …