Constraints on unparticle long range forces from big bang nucleosynthesis bounds on the variation of the gravitational coupling

Abstract

We use big bang nucleosynthesis bounds on the variation of the gravitational coupling to derive constraints on the strength of the deviation from the gravitational inverse-square law due to tensor and vector unparticle exchange.

Vector unparticle enhanced black holes: Exact solutions and thermodynamics

“…Dubbed "ungravity", in the Newtonian limit this is most likely to be observed as deviations in planetary orbits and perihelion precession [25,26] on large scales, as well as constrain Big Bang Nucleosynthesis [14], dark energy [24] and even entropic gravity [42]. Conversely, the very small-scale behavior of scalar and tensor ungravity begins to mimic that of n large extra compactified dimensions [44], but with n → 2d U −2 and the Newtonian potential proportional to 1/r 2d U −1 [45][46][47].…”

“…Dubbed "unparticle physics" because of the non-intuitive phase space structure, its introduction has caused a flurry of research into modifications to known physics and post-TeV predictions. Accelerator phenomenology has been the main emphasis in the literature [3][4][5][6][7][8][9][10] [11,12], but astrophysical/cosmological [13][14][15][16][17][18] [19][20][21][22][23][24] [ [25][26][27], low to ultra-high neutrino phenomenology [28][29][30][31][32][33][34][35] and general quantum field theory [36][37][38][39][40][41] [42,43] applications have been of extreme importance as well.…”

Neutron stars, ungravity, and the I-Love-Q relations

“…[29,43], Constraints from Big Bang Nucleosynthesis were discussed in Ref. [33], and implications for dark energy and entropic gravity in Refs. [44,45], respectively.…”

“…Further investigations of UP effects have immediately been carried out in collider physics and elsewhere [20][21][22][23]. The effect of UP states in astrophysics and cosmology have been extensively studied [24][25][26][27][28][29][30][31][32][33][34]. Recently, the effect of an UG-inspired model on the properties of the Sun has been considered and astrophysical bounds on the UG parameters, i.e., the scaling dimension and length scale, have been obtained [35].…”

White dwarfs in an ungravity-inspired model

“…Recent experiments set very stringent bounds on putative new interactions with ranges at submillimeter scale [11] (see also Ref. [12] for a comparison of the results of searches of new short range interactions and the bounds for ungravity arising from nucleosynthesis considerations); however, these do not conflict with our study as we will consider deviations of the Newtonian force at range in the interval 10 −8 R S R * 10 2 R S , where R S is the radius of the sun.…”