SCOAP3 Repository 9 records found  Search took 0.02 seconds. 
1. The 3.5 keV line from stringy axions / Cicoli, Michele ; Diaz, Victor ; Guidetti, Veronica ; Rummel, Markus
An interesting result in particle astrophysics is the recent detection of an unexplained 3.5 keV line from galaxy clusters. [...]
Published in JHEP 1710 (2017) 192 10.1007/JHEP10(2017)192 arXiv:1707.02987
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2. Point-particle effective field theory III: relativistic fermions and the Dirac equation / Burgess, C. ; Hayman, Peter ; Rummel, Markus ; Zalavári, László
We formulate point-particle effective field theory (PPEFT) for relativistic spin-half fermions interacting with a massive, charged finite-sized source using a first-quantized effective field theory for the heavy compact object and a second-quantized language for the lighter fermion with which it interacts. [...]
Published in JHEP 1709 (2017) 007 10.1007/JHEP09(2017)007 arXiv:1706.01063
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3. Point-particle effective field theory II: relativistic effects and Coulomb/inverse-square competition / Burgess, C. ; Hayman, Peter ; Rummel, Markus ; Williams, Matt ; et al
We apply point-particle effective field theory (PPEFT) to compute the leading shifts due to finite-sized source effects in the Coulomb bound energy levels of a relativistic spinless charged particle. [...]
Published in JHEP 1707 (2017) 072 10.1007/JHEP07(2017)072 arXiv:1612.07334
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4. Accidental Kähler moduli inflation / Maharana, Anshuman ; Rummel, Markus ; Sumitomo, Yoske
We study a model of accidental inflation in type IIB string theory where inflation occurs near the inflection point of a small Kähler modulus [...]
Published in JCAP 1509 (2015) 040 10.1088/1475-7516/2015/09/040 arXiv:1504.07202
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5. De Sitter vacua from a D-term generated racetrack potential in hypersurface Calabi-Yau compactifications / Braun, Andreas ; Rummel, Markus ; Sumitomo, Yoske ; Valandro, Roberto
In [1] a mechanism to fix the closed string moduli in a de Sitter minimum was proposed: a D-term potential generates a linear relation between the volumes of two rigid divisors which in turn produces at lower energies a race-track potential with de Sitter minima at exponentially large volume. [...]
Published in JHEP 1512 (2015) 033 10.1007/JHEP12(2015)033 arXiv:1509.06918
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6. Accidental Kähler moduli inflation / Maharana, Anshuman ; Rummel, Markus ; Sumitomo, Yoske
We study a model of accidental inflation in type IIB string theory where inflation occurs near the inflection point of a small Kähler modulus [...]
Published in JCAP 1509 (2015) 040 10.1088/1475-7516/2015/9/040 arXiv:1504.07202
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7. Observational consistency and future predictions for a 3.5 keV ALP to photon line / Alvarez, Pedro D. ; Conlon, Joseph P. ; Day, Francesca V. ; Marsh, M.C. David ; et al
Motivated by the possibility of explaining the 3.5 keV line through dark matter decaying to axion-like particles that subsequently convert to photons, we study ALP-photon conversion for sightlines passing within 50 pc of the galactic centre. [...]
Published in JCAP 1504 (2015) 013 10.1088/1475-7516/2015/04/013 arXiv:1410.1867
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8. ALP conversion and the soft X-ray excess in the outskirts of the Coma cluster / Kraljic, David ; Rummel, Markus ; Conlon, Joseph P.
It was recently found that the soft X-ray excess in the center of the Coma cluster can be fitted by conversion of axion-like-particles (ALPs) of a cosmic axion background (CAB) to photons. [...]
Published in JCAP 1501 (2015) 011 10.1088/1475-7516/2015/01/011 arXiv:1406.5188
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9. De Sitter vacua from a D-term generated racetrack uplift / Sumitomo, Yoske ; Rummel, Markus
We propose an uplift mechanism using a structure of multi-Kähler moduli dependence in the F-term potential of type IIB string theory compactifications. [...]
Published in JHEP 1501 (2015) 015 10.1007/JHEP01(2015)015 arXiv:1407.7580
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