Gauge field localization on a dilatonic deformed brane

Cruz, W. T.; Tahim, M. O.; Almeida, C. A. S.

doi:10.1016/j.physletb.2010.02.064

Cited by 43 publications

(66 citation statements)

References 23 publications

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“…3. Taking into account this new background, we define the kinetic term for the gauge field coupled to the dilaton by the effective action [4,9,10,43,44]…”

Section: Sine-gordon Brane With the Dilaton Fieldmentioning

confidence: 99%

Multiresonance modes in sine–Gordon brane models

et al. 2016

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In this work, we study the localization of the vector gauge field in two fivedimensional braneworlds generated by scalar fields coupled to gravity. The sine-Gordon like potentials are employed to produce different thick brane setups. A zero mode localized is obtained, and we show the existence of reverberations with the wave solutions indicating a quasi-localized massive mode. More interesting results are achieved when we propose a double sineGordon potential to the scalar field. The resulting thick brane shows a more detailed topology with the presence of an internal structure composed by two kinks. The massive spectrum of the gauge field is revalued on this scenario revealing the existence of various resonant modes. Furthermore, we compute the corrections to Coulomb law coming from these massive KK vector modes in these thick scenarios, where is concluded that the dilaton parameter regulates these corrections.

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“…3. Taking into account this new background, we define the kinetic term for the gauge field coupled to the dilaton by the effective action [4,9,10,43,44]…”

Section: Sine-gordon Brane With the Dilaton Fieldmentioning

confidence: 99%

Multiresonance modes in sine–Gordon brane models

et al. 2016

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“…As we will see, the deformations will be very important for localization and normalization of fermionic fields. Using a well known resonance detecting method [22,24,28,29,30], we analyze the massive modes arising from the dimensional reduction functions. We must remark that our analysis of deformed models includes the thick brane scenario, which can be recovered by changing the parameter of deformation.…”

Section: Introductionmentioning

confidence: 99%

Fermions on deformed thick branes

2011

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Abstract. In this work we investigate the issue of fermion localization and resonances in (4, 1)-deformed branes constructed with one scalar field coupled with gravity. Such models provide us branes with internal structures that turns the gravitational interaction more effective for fermions aside the brane, increasing their lifetime. The coupling between the scalar field and spinors is a necessary condition for fermions to be localized on such branes. After performing a chiral decomposition of the five-dimensional spinor we found resonances with both chiralities. The correspondence between the spectra for left and right chirality is guaranteed and Dirac fermions are realized on the brane.

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“…As already mentioned in the introduction, the dilaton field is commonly used in localization of gauge fields in D = 5, for example see [8,13,29,30]. This new degree of freedom is represented for π.…”

Section: Dilaton Couplingmentioning

confidence: 99%

Spinors fields in co-dimension one braneworlds

Mendes

Alencar

Landim

2018

J. High Energ. Phys.

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Abstract:In this work we analyze the zero mode localization and resonances of 1/2−spin fermions in co-dimension one Randall-Sundrum braneworld scenarios. We consider deltalike, domain walls and deformed domain walls membranes. Beyond the influence of the spacetime dimension D we also consider three types of couplings: (i) the standard Yukawa coupling with the scalar field and parameter η 1 , (ii) a Yukawa-dilaton coupling with two parameters η 2 and λ and (iii) a dilaton derivative coupling with parameter h. Together with the deformation parameter s, we end up with five free parameter to be considered. For the zero mode we find that the localization is dependent of D, because the spinorial representation changes when the bulk dimensionality is odd or even and must be treated separately. For case (i) we find that in odd dimensions only one chirality can be localized and for even dimension a massless Dirac spinor is trapped over the brane. In the cases (ii) and (iii) we find that for some values of the parameters, both chiralities can be localized in odd dimensions and for even dimensions we obtain that the massless Dirac spinor is trapped over the brane. We also calculated numerically resonances for cases (ii) and (iii) by using the transfer matrix method. We find that, for deformed defects, the increasing of D induces a shift in the peaks of resonances. For a given λ with domain walls, we find that the resonances can show up by changing the spacetime dimensionality. For example, the same case in D = 5 do not induces resonances but when we consider D = 10 one peak of resonance is found. Therefore the introduction of more dimensions, diversely from the bosonic case, can change drastically the zero mode and resonances in fermion fields.

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Gauge field localization on a dilatonic deformed brane

Cited by 43 publications

References 23 publications

Multiresonance modes in sine–Gordon brane models

Multiresonance modes in sine–Gordon brane models

Fermions on deformed thick branes

Spinors fields in co-dimension one braneworlds

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