Implications of a Dilaton in Gauge Theory and Cosmology

Dick, Rainer

doi:10.1002/prop.2190450702

Cited by 17 publications

(14 citation statements)

References 118 publications

(164 reference statements)

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“…I would like to emphasize that both the regularized Coulomb potential discovered in case ξ = 0 in [12,7] φ(r) = 2f φ ln r + r φ r ,…”

Section: Rainer Dickmentioning

confidence: 98%

Vector and scalar confinement in gauge theory with a dilaton

Dick¹

1997

Physics Letters B

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In a recent letter it has been shown that gauge theory with a dilaton provides linearly increasing gauge potentials from static or uniformly moving pointlike colour sources. This ensures confinement in the framework of no-pair equations. Here I would like to point out that a dilaton coupling both to the gauge curvature term and to fermion masses yields a linear potential with a scalar component and a dominant vector contribution.Comment: Latex, 7 page

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“…I would like to emphasize that both the regularized Coulomb potential discovered in case ξ = 0 in [12,7] φ(r) = 2f φ ln r + r φ r ,…”

Section: Rainer Dickmentioning

confidence: 98%

Vector and scalar confinement in gauge theory with a dilaton

Dick¹

1997

Physics Letters B

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“…The same holds for the KR axion, provided it lies in an ultra-low mass window. Besides the full dilaton interaction for the bosons as mentioned above, we could consider a very light dilaton ϕ which is stabilised [81,82] through the axion.…”

Section: Q Axidilatons From Effective String Modelsmentioning

confidence: 99%

General relativistic boson stars

Schunck

Mielke

2003

Class. Quantum Grav.

735

730

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There is accumulating evidence that (fundamental) scalar fields may exist in Nature. The gravitational collapse of such a boson cloud would lead to a boson star (BS) as a new type of a compact object. Similarly as for white dwarfs and neutron stars, there exists a limiting mass, below which a BS is stable against complete gravitational collapse to a black hole.According to the form of the self-interaction of the basic constituents and the spacetime symmetry, we can distinguish mini-, axidilaton, soliton, charged, oscillating and rotating BSs. Their compactness prevents a Newtonian approximation, however, modifications of general relativity, as in the case of Jordan-Brans-Dicke theory as a low energy limit of strings, would provide them with gravitational memory.In general, a BS is a compact, completely regular configuration with structured layers due to the anisotropy of scalar matter, an exponentially decreasing 'halo', a critical mass inversely proportional to constituent mass, an effective radius, and a large particle number. Due to the Heisenberg principle, there exists a completely stable branch, and as a coherent state, it allows for rotating solutions with quantised angular momentum.In this review, we concentrate on the fascinating possibilities of detecting the various subtypes of (excited) BSs: Possible signals include gravitational redshift and (micro-)lensing, emission of gravitational waves, or, in the case of a giant BS, its dark matter contribution to the rotation curves of galactic halos.

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“…The mass m of unstable dark matter which decays through gravitational couplings is constrained by the fact that the lifetime is only of order τ ≤ m 2 P lanck /m 3 [27,28], and therefore unstable heavy relics must decay through strongly suppressed channels which effectively correspond to sub-gravitational couplings. This provided one motivation for the collisional annihilation proposal in [10], since the need for 2-particle collisions implies a larger lifetime of annihilating wimpzillas as opposed to decaying superheavy particles.…”

Section: Cosmic Raysmentioning

confidence: 99%