Pion self-energy in the chiral bag model

1984 ◽  
Vol 30 (11) ◽  
pp. 2426-2428
Author(s):  
Morihiro Kadoya ◽  
Tadashi Miyazaki
Keyword(s):  
Bag Model ◽  
Self Energy

Self-Energy in the Bag Model

1984 ◽  
Vol 3 (2) ◽  
pp. 231-244 ◽  
Author(s):  
X.H. Yang ◽  
A.K. Kerman
Keyword(s):  
Bag Model ◽  
Self Energy

A FUZZY BAG MODEL FOR BARYON-DIBARYON PHASE TRANSITION IN NEUTRON STARS

2011 ◽  
Vol 20 (supp02) ◽  
pp. 152-159
Author(s):  
ALBERTO S. S. ROCHA ◽  
CÉSAR A. Z. VASCONCELLOS ◽  
HELIO T. COELHO
Keyword(s):  
Phase Transition ◽  
Equation Of State ◽  
Neutron Stars ◽  
Internal Structure ◽  
External Medium ◽  
Nuclear Model ◽  
Maximum Mass ◽  
Bag Model ◽  
Abrupt Transition ◽  
Self Energy

We propose a model for dibaryon stars which takes into account the internal structure of nucleons via a fuzzy bag model. This choice of nuclear model avoids nucleon self-energy divergences as in the MIT model, and also considers a softer bag surface, thus eliminating the disadvantage of an abrupt transition between the interior of the bag and the external medium. We obtain results for the equation of state and for the mass-radius relation for the dibaryon star. Our results indicate a smaller maximum mass for dibaryon stars as compared to neutron stars, mainly due to the relaxation of the interior Fermi pressure in the dibaryon-populated star core.

Fuzzy bag model: nucleon self-energy due to pion interaction

1984 ◽  
Vol 62 (6) ◽  
pp. 554-561 ◽  
Author(s):  
Y. Nogami ◽  
Akira Suzuki ◽  
Naoko Yamanishi
Keyword(s):  
Pair Creation ◽  
Bag Model ◽  
Self Energy ◽  
Quark Interaction ◽  
Pion Interaction ◽  
Intermediate States

As pointed out earlier, the pion–quark interaction based on a bag model with a sharp, fixed surface gives rise to the divergence of various quantities such as the nucleon self-energy. This is due to quark excitation in the intermediate states. We examine how this difficulty can be moderated in a "fuzzy bag model" in which the surface is smeared. The nucleon self-energy due to pion interaction converges in the fuzzy bag model. We find, however, that the convergence is quite slow, and the contribution of processes such as [Formula: see text] pair creation, which have not been considered in earlier calculations, is very important.

scholarly journals Convergent self-energy in the cloudy bag model

1983 ◽  
Vol 132 (1-3) ◽  
pp. 173-177 ◽  
Author(s):  
Gregory A. Crawford ◽  
Gerald A. Miller
Keyword(s):  
Bag Model ◽  
Self Energy

Phenomena and devices at the quantum scale and the mesoscale

2017 ◽  
Author(s):  
Sandip Tiwari
Keyword(s):  
Coulomb Blockade ◽  
Secure Communication ◽  
Quantum Hall ◽  
Nanoscale Device ◽  
Self Energy ◽  
Stability Diagrams ◽  
Charge Stability ◽  
Bohm Effect ◽  
Aharonov Bohm ◽  
Non Locality

Unique nanoscale phenomena arise in quantum and mesoscale properties and there are additional intriguing twists from effects that are classical in origin. In this chapter, these are brought forth through an exploration of quantum computation with the important notions of superposition, entanglement, non-locality, cryptography and secure communication. The quantum mesoscale and implications of nonlocality of potential are discussed through Aharonov-Bohm effect, the quantum Hall effect in its various forms including spin, and these are unified through a topological discussion. Single electron effect as a classical phenomenon with Coulomb blockade including in multiple dot systems where charge stability diagrams may be drawn as phase diagram is discussed, and is also extended to explore the even-odd and Kondo consequences for quantum-dot transport. This brings up the self-energy discussion important to nanoscale device understanding.

scholarly journals Quark cores in extensions of the MIT Bag model

2021 ◽  
Author(s):  
Salil Joshi ◽  
Sovan Sau ◽  
Soma Sanyal
Keyword(s):  
Bag Model ◽  
Mit Bag Model

scholarly journals Master integrals for bipartite cuts of three-loop photon self energy

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
R. N. Lee ◽  
A. I. Onishchenko
Keyword(s):  
Spectral Density ◽  
High Energy ◽  
Elliptic Integrals ◽  
Iterated Integrals ◽  
Self Energy ◽  
Complete Elliptic Integrals ◽  
The One

Abstract We calculate the master integrals for bipartite cuts of the three-loop propagator QED diagrams. These master integrals determine the spectral density of the photon self energy. Our results are expressed in terms of the iterated integrals, which, apart from the 4m cut (the cut of 4 massive lines), reduce to Goncharov’s polylogarithms. The master integrals for 4m cut have been calculated in our previous paper in terms of the one-fold integrals of harmonic polylogarithms and complete elliptic integrals. We provide the threshold and high-energy asymptotics of the master integrals found, including those for 4m cut.

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