scholarly journals Superfluidity in a model of massless fermions coupled to scalar bosons

1999 ◽  
Vol 60 (9) ◽  
Author(s):  
Robert D. Pisarski ◽  
Dirk H. Rischke
Keyword(s):  
Massless Fermions

scholarly journals CONVOLUTION FORMULA AND FINITE W BOSON WIDTH EFFECTS IN TOP QUARK WIDTH

2008 ◽  
Vol 23 (22) ◽  
pp. 3525-3533 ◽  
Author(s):  
G. CALDERÓN ◽  
G. LÓPEZ CASTRO
Keyword(s):  
Top Quark ◽  
W Boson ◽  
Matrix Theory ◽  
Finite Width ◽  
Current Limit ◽  
Fermion Masses ◽  
Convolution Formula ◽  
Boson Resonance ◽  
Three Body ◽  
Massless Fermions

In the Standard Model, the top quark decay width Γt is computed from the exclusive t → bW decay. We argue in favor of using the three body decays [Formula: see text] to compute Γt as a sum over these exclusive modes. As dictated by the S-matrix theory, these three body decays of the top quark involve only asymptotic states and incorporate the width of the W boson resonance in a natural way. The convolution formula commonly used to include the finite width effects is found to be valid, in the general case, when the intermediate resonance couples to a conserved current (limit of massless fermions in the case of W bosons). The relation Γt = Γ(t → bW) is recovered by taking the limit of massless fermions followed by the W boson narrow width approximation. Although both calculations of Γt are different at the formal level, their results would differ only by tiny effects induced by light fermion masses and higher-order radiative corrections.

scholarly journals Chiral fluids: a few theoretical issues

2018 ◽  
Vol 182 ◽  
pp. 02131
Author(s):  
V. I. Zakharov ◽  
O. V. Teryaev
Keyword(s):  
Chiral Fluids ◽  
Theoretical Issues ◽  
Massless Fermions

We review briefly a few topic concerning physics of fluids whose constituents are massless fermions interacting in chiral invariant way. Macroscopic manifestations of the chral anomaly is one of central issues. Another topic is ultraviolet vs infrared sensistivity of chiral magnetic and vortical effects. To clarify dynamical issues involved we rely mostly on a (well-known) toy model of pionic superfluidity.

scholarly journals NUMERICAL SOLUTIONS IN 5D STANDING WAVE BRANEWORLD

2013 ◽  
Vol 28 (20) ◽  
pp. 1350092 ◽  
Author(s):  
MERAB GOGBERASHVILI ◽  
OTARI SAKHELASHVILI ◽  
GIORGI TUKHASHVILI
Keyword(s):  
Standing Wave ◽  
Numerical Solutions ◽  
Braneworld Model ◽  
The Right ◽  
Matter Fields ◽  
Massless Fermions ◽  
Kaluza Klein

Within the 5D standing wave braneworld model numerical solutions of the equations for matter fields with various spins are found. It is shown that corresponding action integrals are factorizable and convergent over the extra coordinate, i.e. 4D fields are localized on the brane. We find that only left massless fermions are localized on the brane, while the right fermions are localized in the bulk. We demonstrate also quantization of Kaluza–Klein excited modes in our model.

Massless fermions and Kaluza–Klein theory with torsion

1984 ◽  
Vol 25 (9) ◽  
pp. 2696-2703 ◽  
Author(s):  
Yong‐Shi Wu ◽  
A. Zee
Keyword(s):  
Klein Theory ◽  
Massless Fermions ◽  
Kaluza Klein

CPN−1model with massless fermions

1981 ◽  
Vol 24 (4) ◽  
pp. 937-940 ◽  
Author(s):  
César Gomez
Keyword(s):  
Massless Fermions

scholarly journals Coulomb drag of massless fermions in graphene

2011 ◽  
Vol 83 (16) ◽  
Author(s):  
Seyoung Kim ◽  
Insun Jo ◽  
Junghyo Nah ◽  
Z. Yao ◽  
S. K. Banerjee ◽  
...  
Keyword(s):  
Coulomb Drag ◽  
Massless Fermions

Experimental evidence of a new class of massless fermions

2020 ◽  
Vol 5 (4) ◽  
pp. 679-682 ◽  
Author(s):  
Marek Kopciuszyński ◽  
Mariusz Krawiec ◽  
Lucyna Żurawek ◽  
Ryszard Zdyb
Keyword(s):  
Surface Layer ◽  
Experimental Evidence ◽  
New Class ◽  
Massless Fermions

Massless fermions forming fortune teller states in a surface layer of Si(110).

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