Fermion localization and resonances on two-field thick branes

Journal Article · Mon Jun 15 00:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.125022· OSTI ID:21301029

Almeida, C A. S. ^[1]; Casana, R; Ferreira, Jr, M M ^[2]; Gomes, A R ^[3]

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1. Departamento de Fisica, Universidade Federal do Ceara (UFC), C. P. 6030, 60455-70, Fortaleza, Ceara (Brazil)
2. Departamento de Fisica, Universidade Federal do Maranhao (UFMA), Campus Universitario do Bacanga, 65085-580, Sao Luis, Maranhao (Brazil)
3. Departamento de Fisica, Instituto Federal de Educacao, Ciencia e Tecnologia do Maranhao (IFMA), 65025-001, Sao Luis, Maranhao (Brazil)

We consider (4, 1)-dimensional branes constructed with two scalar fields {phi} and {chi} coupled to a Dirac spinor field by means of a general Yukawa coupling. The equation of motion for the coefficients of the chiral decomposition of the spinor in curved spacetime leads to a Schroedinger-like equation whose solutions allow to obtain the masses of the fermionic modes. The simplest Yukawa coupling {psi}{phi}{chi}{psi} is considered for the Bloch brane model and fermion localization is studied. We found resonances for both chiralities and related their appearance to branes with internal structure.

• OSTI ID: 21301029
• Journal Information: Physical Review. D, Particles Fields, Vol. 79, Issue 12; Other Information: DOI: 10.1103/PhysRevD.79.125022; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANES
CHIRALITY
DECOMPOSITION
EQUATIONS OF MOTION
FERMIONS
MANY-DIMENSIONAL CALCULATIONS
MASS
MATHEMATICAL SOLUTIONS
M-THEORY
RESONANCE
SCALAR FIELDS
SPACE-TIME
SPINOR FIELDS
YUKAWA POTENTIAL