# The European Physical Journal Plus

The European Physical Journal Plus > 2019 > 134 > 7 > 1-10

*R*to an arbitrary function

*f*(

*R*) in the original Brans-Dicke (BD) action. An interesting property was found in the GBD theory, for example, it can naturally solve the problem of the γ value emerging in

*f*(

*R*) modified gravity (

*i.e.*the inconsistent problem between...

The European Physical Journal Plus > 2019 > 134 > 7 > 1-7

The European Physical Journal Plus > 2019 > 134 > 7 > 1-21

The European Physical Journal Plus > 2019 > 134 > 7 > 1-16

The European Physical Journal Plus > 2019 > 134 > 7 > 1-7

*P*expressing spacetime as made of “spacetime atoms” of quantum origin is considered. Using its defining relation, we provide an exact expression for ρ involving the van Vleck biscalar, and show it can be recast in terms of the extrinsic curvature of suitable equi-geodesic surfaces centered at

*P*. Moreover, looking at the...

The European Physical Journal Plus > 2019 > 134 > 7 > 1-14

The European Physical Journal Plus > 2019 > 134 > 7 > 1-10

The European Physical Journal Plus > 2019 > 134 > 7 > 1-13

*U*, specific heat

*C*, free energy

*F*and entropy

*S*for the pure vibrational state in the classical limit for these energy eigenvalues, are studied.

The European Physical Journal Plus > 2019 > 134 > 7 > 1-16

The European Physical Journal Plus > 2019 > 134 > 7 > 1-7

The European Physical Journal Plus > 2019 > 134 > 7 > 1-11

*r*. We analyze the non-exotic matter aspects via the null energy condition (NEC) and represent the requirements necessary for the ordinary matter or electromagnetic radiation formation...

The European Physical Journal Plus > 2019 > 134 > 7 > 1-10

The European Physical Journal Plus > 2019 > 134 > 7 > 1-11

The European Physical Journal Plus > 2019 > 134 > 7 > 1-10

*N*-radial Schrödinger equation is analytically solved by using the SUSYQM method, in which the heavy-quarkonia potential is introduced at finite temperature and baryon chemical potential. The energy eigenvalue is calculated in the

*N*-dimensional space. The obtained results show that the binding energy strongly decreases with increasing temperature and is slightly sensitive for changing baryon...

The European Physical Journal Plus > 2019 > 134 > 7 > 1-10

*p*-InP layers (

*p*-InP-Ls). The samples were elaborated by a vapor phase etching (VE) method with two halogenic acids (1M HF and 1M HCl). The recording of the porous surfaces' morphology was carried out by Scanning Electron Microscopy (SEM). The porous...

The European Physical Journal Plus > 2019 > 134 > 7 > 1-24

The European Physical Journal Plus > 2019 > 134 > 7 > 1-13

The European Physical Journal Plus > 2019 > 134 > 7 > 1-12

The European Physical Journal Plus > 2019 > 134 > 7 > 1-15

The European Physical Journal Plus > 2019 > 134 > 7 > 1-26