Universal aspects of gravity localized on thick branes

Csáki, Csaba; Erlich, Joshua; Hollowood, Timothy J.; Shirman, Yuri

doi:10.1016/s0550-3213(00)00271-6

Cited by 540 publications

(812 citation statements)

References 46 publications

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“…Our investigations are based on several recent works on branes [1,2,3,4,5,6,7,8,9], and it follows the lines of our former work on brane structure [15].…”

Section: Further Commentsmentioning

confidence: 99%

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Bloch Brane

Bazeia

Gomes

2004

J. High Energy Phys.

244

355

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“…Our investigations are based on several recent works on branes [1,2,3,4,5,6,7,8,9], and it follows the lines of our former work on brane structure [15].…”

Section: Further Commentsmentioning

confidence: 99%

“…We focus mainly on generation of thick branes, their stability and internal structure, and our investigations follow several recent works on the subject [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15].…”

Section: Introductionmentioning

confidence: 99%

Bloch Brane

Bazeia

Gomes

2004

J. High Energy Phys.

244

355

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“…is the effective action and φ(y) is a function of extra dimension y [6]. A field is said to be localized if the integral I is finite, i.e., the function φ(y) is square integrable.…”

Section: Jhep02(2018)018mentioning

confidence: 99%

“…The solution of these equations can be obtained through the superpotential method, according to [6,8,28], introducing the superpotencial W (φ) by φ = ∂W ∂φ . Therefore, choosing φ(y) = a tanh(by) the superpotencial W (φ) is given by…”

Section: The Thick Brane Casementioning

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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“…Hence, one would find that the effective RS brane tension T RS is a sum of an infinite number of higher curvature terms and T b : e.g. schematically,where the R's correspond to curvature quantities, the α i correspond to coefficients of the 2 For aspects of thick brane physics, see for example [21,6,22,23].4 derivative expansion, and M is the five-dimensional Planck scale. 3 Therefore, even if T RS = O(TeV), one may in principle have a T b that is much larger, depending upon the precise nature of α i and R. In that case, even without the "confining" effect of the orbifold fixed point, the brane would not "fatten" at a TeV scale.…”

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confidence: 99%

Experimental Probes of the Randall-Sundrum Infinite Extra Dimension

Davoudiasl¹

2000

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The phenomenological possibilities of the Randall-Sundrum non-compact extra dimension scenario with the AdS horizon increased to approximately a millimeter length, corresponding to an effective brane tension of (TeV) 4 , are investigated. The corrections to the Newtonian potential are found to be the only observationally accessible probe of this scenario, as previously suggested in the literature. In particular, the presence of the continuum of KK modes does not lead to any observable collider signatures. The extent to which experimental tests of Newtonian gravity can distinguish this scenario from the scenario of Arkani-Hamed, Dimopoulos, and Dvali with one and two millimeter size extra dimensions is explicitly demonstrated. * Electronic mail: djchung@umich.edu † Electronic mail: leverett@feynman.physics.lsa.umich.edu ‡ Electronic mail: hooman@slac.stanford.edu 1 Much of the recent excitement and theoretical speculation regarding large/warped compact extra dimensions found for example in Refs. [1][2][3][4] has been fueled by the amelioration/novel rephrasing of the various hierarchy problems. In addition, the models of Refs. [1,4] have raised some hopes that upcoming experiments may reveal signatures of the existence of higher dimensions [5][6][7]. On the other hand, the novelty of having phenomenologically consistent four-dimensional gravity in the presence of non-compact higher dimensions has been the main motivation for the investigations of "warped bulk" models based on the idea of Randall and Sundrum [8,9] without much motivation from upcoming experimental signature possibilities. In this paper, we investigate the possible experimental signatures of the model of Randall and Sundrum of Ref. [8] in the case that the warping scale is sufficiently lowered. Since most of the qualitative aspects of this scenario have already been discussed in Ref.[10] and Ref. [11], this paper will focus on the details of the experimental signatures.Unlike the non-warped scenarios and some of the variations of the warped model for which the gravity is quasilocalized (see also [9,12,13]), the original warped bulk model of Randall and Sundrum [8] (henceforth referred to as RS) did not seem to have any low energy phenomenological implications (perhaps with the exception of black hole physics [14][15][16]11]), mainly because the cosmological constant contribution coming from the constant energy density on the Planck brane had always been identified with the string scale for naive naturalness reasons. (We will refer to this constant energy density as the RS brane tension.) However, as explicitly noted for example by Kraus [17], if one attempts to identify the RS brane tension with that of a collection of D3 branes, one finds a discrepancy: the D3 brane tension is 2/3 of the brane tension needed for the RS brane tension.More recently, a different class of SUGRA solutions [18] (albeit singular) have been discovered which share the warped bulk spacetime of the RS scenario (although the noncompact limit has not been explored). E...

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Universal aspects of gravity localized on thick branes

Cited by 540 publications

References 46 publications

Bloch Brane

Bloch Brane

Spinors fields in co-dimension one braneworlds

Experimental Probes of the Randall-Sundrum Infinite Extra Dimension

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