We analyse the one-loop fermionic contribution for the scalar effective potential in the temperature dependent Yukawa model. In order to regularize the model a mix between dimensional and analytic regularization procedures is used. We find a general expression for the fermionic contribution in arbitrary spacetime dimension. It is found that in D = 3 this contribution is finite.

By requiring the mass of the "bound state" of particle and quantum to have the mass of the particle we derive a fully covariant theory of single quantum exchange and production with physical unitarity, the correct nonrelativistic limit of Yukawa or Coulomb "potential" scattering, and scalar "Thompson scattering." Submitted to Physical Review Letters * Work supported by the Department of Energy,...

We study the static quantum potential for a theory of anti-symmetric tensor fields that results from the condensation of topological defects, within the framework of the gauge-invariant but path-dependent variables formalism. Our calculations show that the interaction energy is the sum of a Yukawa and a linear potentials, leading to the confinement of static probe charges.

In this work, we consider a Yukawa modification of the Casimir wormhole. With help an Equation State, impose Zero Tidal Forces. We will examine two different approaches: in first approach, fix form shape function wormholes modified by term three ways and finally superposition profiles. second original source deduce both approaches reference energy density be that source. Connection with Absurdl...

A simple analytical approach to estimate thermodynamic properties of model Yukawa systems is presented. The approach extends the traditional Debye-Hückel theory into the regime of moderate coupling and is able to qualitatively reproduce thermodynamics of Yukawa systems up to the fluidsolid phase transition. The simplistic equation of state (pressure equation) is derived and applied to the hydro...

According to the gravitational suppression (GraS) hypothesis the gravitational interaction between exotic (dark) and standard (visible) matter is suppressed below the kpc scales. We review the phenomenological motivations at the basis of this idea and its formal implementation by means of a Yukawa contribution to the usual Newtonian potential. We also discuss a class of astrophysical phenomena ...

We investigate Hamiltonian formulation of quantum scalar fields in a static quantum metric. We derive a functional integral formula for the propagator. We show that the quantum metric substantially changes the behaviour of the scalar propagator and the effective Yukawa potential.

We investigate the influence of chimney topology $T\times T\times R$ Universe on gravitational potential and force that are generated by point-like massive bodies. obtain three distinct expressions for solutions. One follows from Fourier expansion delta functions into series using periodicity in two toroidal dimensions. The second one is summation solutions Helmholtz equation, a source mass its...