Antisymmetric tensor fields in Randall–Sundrum thick branes

Alencar, G.; Landim, R. R.; Tahim, M. O.; Muniz, C. R.; Filho, R. N. Costa

doi:10.1016/j.physletb.2010.09.005

Cited by 33 publications

(38 citation statements)

References 37 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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“…The localization of fields in a framework that consider the brane as a kink has been studied for example in [22][23][24][25]. In this context the present authors have studied the issue of localization and resonances of a three form field in [26] and in a separate paper q−form fields are analysed in a codimension one p−brane [27]. The aspects of the extra dimension with codimension two has been recently studied.…”

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confidence: 99%

Antisymmetric tensor fields in codimension-two brane world

Alencar¹,

Landim²,

Tahim³

et al. 2011

EPL

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Abstract. -In this work we consider the issue of localization of antisymmetric tensor fields of arbitrary rank in a D dimensional Space-time with a codimension two membrane. A string-like defect is used to simulate the membrane. The localization of massless and massive fields is found. The mass spectrum is infinitely degenerate for each mass level and this is solved by coupling the q−form to fermions.Introduction. -Higher dimensional theories are source of several ideas from the mathematical and physical point of view. Its diversity comes from the number of fields that naturally appears in their descriptions. If our universe is multidimensional then, in D = 4, all of these fields should present some signal in the accelerators. This is enough to situate the study of localization of all sort of fields as an important aspect in physics of extra dimensions. These scenarios are those in which membranes or small compactified extra dimensions plays crucial role. They are naturally embedded in the formalism of superstring Theories.As is well known, the quantum superstrings present in its spectrum a bunch of bosonic and fermionic tensorial fields: in fact, an infinite tower of them [1,2]. The understanding of the superstrings low energy limit is based on its massless excitations, and the low tension limit involves all the fields contained in its spectrum (in this case, all fields are massless) [3]. From this viewpoint, they are of great interest because they may have the status of fields describing particles other than the usual ones. As an example we can cite the space-time torsion [4] and the axion field [5,6] that have separated descriptions by the two-form. Other applications of these kind of fields are its relation with the AdS/CFT conjecture [7].The spectrum of the superstring is classified in various sectors. For example, the bosonic massless fields of the Ramond-Ramond sector in type IIA superstring is different from that in type IIB superstring. In type IIA we get a 1-form and a 3-form, while in type IIB we get a 0-form, a 2-form and a 4-form. The existence of these fields is related to the existence of stable D−branes in type II theories. These D−branes are electrically or magnetically

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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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Antisymmetric tensor fields in Randall–Sundrum thick branes

Cited by 33 publications

References 37 publications

Multiresonance modes in sine–Gordon brane models

Multiresonance modes in sine–Gordon brane models

Antisymmetric tensor fields in codimension-two brane world

Spinors fields in co-dimension one braneworlds

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