Turning a Newtonian analogy for FLRW cosmology into a relativistic problem

2020 ◽  
Vol 102 (4) ◽  
Author(s):  
Valerio Faraoni ◽  
Farah Atieh
Keyword(s):  
Relativistic Problem ◽  
Flrw Cosmology

scholarly journals FLRW-cosmology in generic gravity theories

2020 ◽  
Vol 80 (11) ◽  
Author(s):  
Metin Gürses ◽  
Yaghoub Heydarzade
Keyword(s):  
Perfect Fluid ◽  
Gravity Theory ◽  
Fluid Type ◽  
Field Equations ◽  
Walker Metric ◽  
Flrw Cosmology ◽  
Arbitrary Dimensions ◽  
Gravity Theories

AbstractWe prove that for the Friedmann–Lemaitre–Robertson–Walker metric, the field equations of any generic gravity theory in arbitrary dimensions are of the perfect fluid type. The cases of general Lovelock and $${\mathcal {F}}(R, {\mathcal {G}})$$ F ( R , G ) theories are given as examples.

Bonding in Radon Hexafluoride: An Unusual Relativistic Problem?

ChemInform ◽  
2003 ◽  
Vol 34 (22) ◽  
Author(s):  
Michael Filatov ◽  
Dieter Cremer
Keyword(s):  
Relativistic Problem

A possible approach to the two-body relativistic problem

1980 ◽  
Vol 56 (3) ◽  
pp. 263-288 ◽  
Author(s):  
D. Dominici ◽  
J. Gomis ◽  
G. Longhi
Keyword(s):  
Relativistic Problem

scholarly journals Dirac fields in flat FLRW cosmology: Uniqueness of the Fock quantization

2017 ◽  
Vol 376 ◽  
pp. 76-88 ◽  
Author(s):  
Jerónimo Cortez ◽  
Beatriz Elizaga Navascués ◽  
Mercedes Martín-Benito ◽  
Guillermo A. Mena Marugán ◽  
José M. Velhinho
Keyword(s):  
Dirac Fields ◽  
Flrw Cosmology

scholarly journals EFFECTS OF A MIXED VECTOR-SCALAR KINK-LIKE POTENTIAL FOR SPINLESS PARTICLES IN TWO-DIMENSIONAL SPACE–TIME

2007 ◽  
Vol 22 (14n15) ◽  
pp. 2609-2618 ◽  
Author(s):  
ANTONIO S. DE CASTRO
Keyword(s):  
Morse Potential ◽  
Dimensional Space ◽  
Liouville Problem ◽  
Bounded Solutions ◽  
Compton Wavelength ◽  
Apparent Paradox ◽  
Exactly Solvable ◽  
Relativistic Problem ◽  
Dimensional Space Time ◽  
Sturm Liouville

The intrinsically relativistic problem of spinless particles subject to a general mixing of vector and scalar kink-like potentials (~ tanh γx) is investigated. The problem is mapped into the exactly solvable Sturm–Liouville problem with the Rosen–Morse potential and exact bounded solutions for particles and antiparticles are found. The behavior of the spectrum is discussed in some detail. An apparent paradox concerning the uncertainty principle is solved by recurring to the concept of effective Compton wavelength.

scholarly journals FLRW cosmology of induced dark energy model and open universe

2017 ◽  
Vol 95 (12) ◽  
pp. 1215-1218 ◽  
Author(s):  
Amir F. Bahrehbakhsh
Keyword(s):  
Dark Energy ◽  
Dark Energy Model ◽  
Early Time ◽  
Energy Model ◽  
Late Time ◽  
Open Universe ◽  
Fifth Dimension ◽  
Flrw Cosmology

We investigate the Friedmann–Lemaître–Robertson–Walker (FLRW) type cosmology of the induced dark energy model and illustrate that the extra terms emerging from the fifth dimension can play the role of dark energy. The model predicts the expansion with deceleration at early time and acceleration in late time for an open universe.

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