SCOAP3 Repository 8 records found  Search took 0.01 seconds. 
1. Dark energy as a remnant of inflation and electroweak symmetry breaking / Dimopoulos, Konstantinos ; Markkanen, Tommi
It is shown that dark energy can be obtained from the interplay of the Higgs boson and the inflaton. [...]
Published in JHEP 1901 (2019) 029 10.1007/JHEP01(2019)029 arXiv:1807.04359
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2. Is the Big Rip unreachable? / Dimopoulos, Konstantinos
I investigate the repercussions of particle production when the Universe is dominated by a hypothetical phantom substance. [...]
Published in Physics letters B (2018) 10.1016/j.physletb.2018.08.040
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3. Ultra slow-roll inflation demystified / Dimopoulos, Konstantinos
Ultra-slow-roll (USR) inflation is a new mode of inflation which corresponds to the occasions when the inflaton field must traverse an extremely flat part of the scalar potential, when the usual slow-roll (SR) fails. [...]
Published in Physics letters B (2017) 10.1016/j.physletb.2017.10.066
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4. How thermal inflation can save minimal hybrid inflation in supergravity / Dimopoulos, Konstantinos ; Owen, Charlotte
Minimal hybrid inflation in supergravity has been ruled out by the 2015 Planck observations because the spectral index of the produced curvature perturbation falls outside observational bounds. [...]
Published in JCAP 1610 (2016) 020 10.1088/1475-7516/2016/10/020 arXiv:1606.06677
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5. Non-Bunch–Davis initial state reconciles chaotic models with BICEP and Planck / Ashoorioon, Amjad ; Dimopoulos, Konstantinos ; Sheikh-Jabbari, Mohammad M. ; Shiu, Gary
The BICEP2 experiment has announced a signal for primordial gravity waves with tensor-to-scalar ratio r=0.2−0.05+0.07 [1] . [...]
Published in Physics letters B 737 (2014) 98-102 10.1016/j.physletb.2014.08.038
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6. Shaft inflation / Dimopoulos, Konstantinos
A new family of inflation models is introduced and studied. [...]
Published in Physics letters B 735 (2014) 75-78 10.1016/j.physletb.2014.06.004
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7. Reconciliation of high energy scale models of inflation with Planck / Ashoorioon, Amjad ; Dimopoulos, Konstantinos ; Sheikh-Jabbari, M.M. ; Shiu, Gary
The inflationary cosmology paradigm is very successful in explaining the CMB anisotropy to the percent level. Besides the dependence on the inflationary model, the power spectra, spectral tilt and non-Gaussianity of the CMB temperature fluctuations also depend on the initial state of inflation. [...]
Published in JCAP 1402 (2014) 025 10.1088/1475-7516/2014/02/025 arXiv:1306.4914
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8. Inflationary buildup of a vector field condensate and its cosmological consequences / Sanchez, Juan C. Bueno ; Dimopoulos, Konstantinos
Light vector fields during inflation obtain a superhorizon perturbation spectrum when their conformal invariance is appropriately broken. [...]
Published in JCAP 1401 (2014) 012 10.1088/1475-7516/2014/01/012 arXiv:1308.3739
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2 Dimopoulos, K.
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