Cosmological Constraints on Unparticles as Continuous Mass Scalars
arXiv:0709.2350 · doi:10.1088/1475-7516/2009/03/019
Abstract
We study the cosmological constraints on unparticle interactions and the temperature of the Universe for the case where unparticle states can be modelled as continuous mass particles with lifetime > 1s. By considering thermal background quark decay to continuous mass scalars via a scalar operator of dimension d_{U}, we show that the condition that the Universe is not dominated by scalars at nucleosynthesis imposes a lower bound on the scale of the interaction of the unparticle sector, with M_{U} > 20-2600 TeV for Λ_{U} > 1 \TeV$, 1.1 < d_{U} < 2.0 and 2 < d_{BZ} < 4. The existence of a long-lived scalar sector also imposes an upper bound on the temperature of the Universe during radiation-domination, which can be as low as a TeV for M_{U} close to its lower bound.
17 pages LaTeX, title altered, conclusions unaltered, additional discussion. Published in JCAP
References in corpus (65)
- Unparticle Physics
- AdS/CFT and gravity
- Another Odd Thing About Unparticle Physics
- Collider signals in unparticle physics
- Collider Phenomenology of Unparticle Physics
- Deconstruction of Unparticles
- Bounds on Unparticles from the Higgs Sector
- Conformal Windows of SU(N) Gauge Theories, Higher Dimensional Representations and The Size of The Unparticle World
- Constraining Unparticle Physics with Cosmology and Astrophysics
- Interactions of Unparticles with Standard Model Particles
- Bounds on Unparticles Couplings to Electrons: from Electron g-2 to Positronium Decays
- Unparticle Physics Effects on D0-anti-D0 Mixing
- Unparticle physics effects in B_s mixing
- Some Phenomenologies of Unparticle Physics
- Unparticles-Higgs Interplay
- Lepton flavor violating processes in unparticle physics
- Long-range Electron Spin-spin Interactions from Unparticle Exchange
- Unparticle physics and Higgs phenomenology
- Unparticle physics on direct CP violation
- B \to K(K^*) missing energy in Unparticle physics
- Unparticle constraints from SN1987A
- Neutrino Decays and Neutrino Electron Elastic Scattering in Unparticle Physics
- Unparticles: Scales and High Energy Probes
- Lepton Flavour Violation in Unparticle Physics
- Constraints On Unparticle Physics In Electroweak Gauge Boson Scattering
- Colored Unparticles
- Unparticle Physics in DIS
- The minimal non-minimal standard model
- Unparticle phase effects
- Unparticle physics at hadron collider via dilepton production
- SUSY Unparticle and Conformal Sequestering
- Unparticle as a field with continuously distributed mass
- Unparticle effect on B_s - \bar B_s mixing and its implications for B_s \to J/ψϕ, ϕϕdecays
- Contact Interactions and Resonance-Like Physics at Present and Future Colliders from Unparticles
- Long range forces and limits on unparticle interactions
- Unparticle Physics and Supersymmetry Phenomenology
- Unparticles and Muon Decay
- Superfield actions for N=8 and N=6 conformal theories in three dimensions
- Supersymmetric Unparticle Effects on Higgs Boson Mass and Dark Matter
- Unparticles at heavy flavour scales: CP violating phenomena
- Unparticle effects in Supernovae cooling
- HEIDI and the unparticle
- BBN And CMB Constraints On Dark Energy
- Possible signatures of unparticles in rare annihilation type B decays
- Constraints on Unparticle Interactions from Invisible Decays of Z, Quarkonia and Neutrinos
- Astro Unparticle Physics
- Unparticle Physics with Jets
- Unraveling unparticles through violation of atomic parity and rare beauty
- Neutrino decay as a possible interpretation to the MiniBooNE observation with unparticle scenario
- Constraints on Unparticle Physics from Solar and KamLAND Neutrinos
- Antisymmetric rank--2 tensor unparticle physics
- A Note on Unparticle Decays
- Signals of Unparticles in Low Energy Parity Violation and NuTeV Experiment
- Direct CP violation of in unparticle physics
- Unparticle Physics and A_{FB}^b on the Z pole
- Unparticle decay of neutrinos and it's effect on ultra high energy neutrinos
- Unparticle physics in top pair signals at the LHC and ILC
- On the Decay of Unparticles
- Unparticle as a particle with arbitrary mass
- Flavors and Phases in Unparticle Physics
- W-pair production in Unparticle Physics
- Effects of Unparticles on Running of Gauge Couplings
- Lepton Flavour Violation
- Unparticle Physics And Gauge Coupling Unification
- Top off the unparticle
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