SCOAP3 Repository 8 records found  Search took 0.26 seconds. 
1. Warm Little Inflaton Becomes Cold Dark Matter / Rosa, João G. ; Ventura, Luís B.
We present a model where the inflaton can naturally account for all the dark matter in the Universe within the warm inflation paradigm. [...]
Published in Physical Review Letters 122 (2019) 10.1103/PhysRevLett.122.161301 arXiv:1811.05493
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2. Inflation with Planck data: A survey of some exotic inflationary models / Gomes, Cláudio ; Bertolami, Orfeu ; Rosa, João G.
We examine some inflationary models based on modifications of gravity in the light of Planck 2015 data, such as the generalized Chaplygin inspired inflation, models based in N=1 supergravity and braneworld scenarios. [...]
Published in Physical Review D 97 (2018) 10.1103/PhysRevD.97.104061 arXiv:1803.08084
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3. Scalar field dark matter with spontaneous symmetry breaking and the 3.5 keV line / Cosme, Catarina ; Rosa, João G. ; Bertolami, O.
We show that the present dark matter abundance can be accounted for by an oscillating scalar field that acquires both mass and a non-zero expectation value from interactions with the Higgs field. [...]
Published in Physics letters B (2018) 10.1016/j.physletb.2018.04.062
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4. Knotty inflation and the dimensionality of spacetime / Berera, Arjun ; Buniy, Roman V. ; Kephart, Thomas W. ; Päs, Heinrich ; et al
We suggest a structure for the vacuum comprised of a network of tightly knotted/linked flux tubes formed in a QCD-like cosmological phase transition and show that such a network can drive cosmological inflation. [...]
Published in EPJC 77 (2017) 682 10.1140/epjc/s10052-017-5253-3
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5. Scalar field dark matter and the Higgs field / Bertolami, O. ; Cosme, Catarina ; Rosa, João G.
We discuss the possibility that dark matter corresponds to an oscillating scalar field coupled to the Higgs boson. [...]
Published in Physics letters B (2016) 10.1016/j.physletb.2016.05.047
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6. Testing black hole superradiance with pulsar companions / Rosa, João G.
We show that the magnetic dipole and gravitational radiation emitted by a pulsar can undergo superradiant scattering off a spinning black hole companion. [...]
Published in Physics letters B (2015) 10.1016/j.physletb.2015.07.063
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7. The importance of being warm (during inflation) / Bartrum, Sam ; Bastero-Gil, Mar ; Berera, Arjun ; Cerezo, Rafael ; et al
The amplitude of primordial curvature perturbations is enhanced when a radiation bath at a temperature T>H is sustained during inflation by dissipative particle production, which is particularly significant when a non-trivial statistical ensemble of inflaton fluctuations is also maintained. [...]
Published in Physics letters B 732 (2014) 116-121 10.1016/j.physletb.2014.03.029
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8. Delaying the waterfall transition in warm hybrid inflation / Bastero-Gil, Mar ; Berera, Arjun ; Metcalf, Thomas P. ; Rosa, João G.
We analyze the dynamics and observational predictions of supersymmetric hybrid inflation in the warm regime, where dissipative effects are mediated by the waterfall fields and their subsequent decay into light degrees of freedom. [...]
Published in JCAP 1403 (2014) 023 10.1088/1475-7516/2014/03/023 arXiv:1312.2961
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See also: similar author names
1 Rosa, J.G.
3 Rosa, João
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