Relativistic model for anisotropic spheres in f(R,T) gravity via Karmarkar condition

2021 ◽  
pp. 168622
Author(s):  
A.K. Prasad ◽  
J. Kumar ◽  
H.D. Singh
1997 ◽  
Vol 12 (03) ◽  
pp. 195-204 ◽  
Author(s):  
Debrupa Chakraverty ◽  
Triptesh De ◽  
Binayak Dutta-Roy ◽  
K. S. Gupta

We calculate the decay width for [Formula: see text] in the framework of a non-relativistic quark (NRQ) model of heavy baryons where the light quarks play the role of spectators. Our calculation does not make an explicit use of the heavy quark symmetry. The branching ratio for the above process as calculated here agrees reasonably well with the experimental value.


2005 ◽  
Vol 334 (4) ◽  
pp. 260-266 ◽  
Author(s):  
S.M. Nagiyev ◽  
E.I. Jafarov ◽  
R.M. Imanov ◽  
L. Homorodean

Carbon ◽  
1977 ◽  
Vol 15 (1) ◽  
pp. 17-23 ◽  
Author(s):  
Isao Mochida ◽  
Keiko Maeda ◽  
Kenjiro Takeshita

1989 ◽  
Vol 501 (4) ◽  
pp. 877-899 ◽  
Author(s):  
Toni Reitz ◽  
Ulrich Mosel

1994 ◽  
Vol 37 (10) ◽  
pp. 925-928
Author(s):  
A. M. Baranov ◽  
N. N. Paklin

2003 ◽  
Vol 25 (1) ◽  
pp. 18-27 ◽  
Author(s):  
Eduardo Cuervo-Reyes ◽  
Marcos Rigol ◽  
Jesus Rubayo-Soneira

Hadron spectra and other properties of quark systems are studied in the framework of a non-relativistic spinindependent phenomenological model. The chosen confining potential is harmonic, which allowed us to obtain analytical solutions for both meson and baryon (of equal constituent quarks) spectra. The introduced parameters are fixed from the low-lying levels of heavy quark mesons. The requirement of flavor independence is imposed, and it restricts the possible choices of inter-quark potentials. The hyper-spherical coordinates are considered for the solution of the three-body problem.


2018 ◽  
Vol 64 (1) ◽  
pp. 18
Author(s):  
G. Gómez ◽  
I. Kotsireas ◽  
I. Gkigkitzis ◽  
I. Haranas ◽  
M.J. Fullana

Weintend to use the description oftheelectron orbital trajectory in the de Broglie-Bohm (dBB) theory to assimilate to a geodesiccorresponding to the General Relativity (GR) and get from itphysicalconclusions. ThedBBapproachindicatesustheexistenceof a non-local quantumfield (correspondingwiththequantumpotential), anelectromagneticfield and a comparativelyveryweakgravitatoryfield, togetherwith a translationkineticenergyofelectron. Ifweadmitthatthosefields and kineticenergy can deformthespace time, according to Einstein'sfield equations (and to avoidtheviolationoftheequivalenceprinciple as well), we can madethehypothesisthatthegeodesicsof this space-time deformation coincide withtheorbitsbelonging to thedBBapproach (hypothesisthat is coherentwiththestabilityofmatter). Fromit, we deduce a general equation that relates thecomponentsofthemetric tensor. Thenwe find anappropriatemetric for it, bymodificationofanexactsolutionofEinstein'sfield equations, whichcorresponds to dust in cylindricalsymmetry. Thefoundmodelproofs to be in agreementwiththebasicphysicalfeaturesofthehydrogenquantum system, particularlywiththeindependenceoftheelectronkineticmomentum in relationwiththeorbit radius. Moreover, themodel can be done Minkowski-like for a macroscopicshortdistancewith a convenientelectionof a constant. According to this approach, theguiding function ofthewaveontheparticlecould be identifiedwiththedeformationsofthespace-time and thestabilityofmatterwould be easilyjustifiedbythe null accelerationcorresponding to a geodesicorbit.


2012 ◽  
Vol 29 (16) ◽  
pp. 165006 ◽  
Author(s):  
Jan J Ostrowski ◽  
Boudewijn F Roukema ◽  
Zbigniew P Buliński
Keyword(s):  

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