Particle creation and reheating in a braneworld inflationary scenario

Goran S. Djordjevic; Neven Bilic; Silvije Domazet

arxiv: 1707.06023 · v3 · pith:DKBMH7BJnew · submitted 2017-07-19 · ✦ hep-th · gr-qc

Particle creation and reheating in a braneworld inflationary scenario

Neven Bilic , Silvije Domazet , Goran S. Djordjevic This is my paper

classification ✦ hep-th gr-qc

keywords creationtachyoncosmologicald-branefieldgaugeinflationmatter

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We study the cosmological particle creation in the tachyon inflation based on the D-brane dynamics in the RSII model extended to include matter in the bulk. The presence of matter modifies the warp factor which results in two effects: a modification of the RSII cosmology and a modification of the tachyon potential. Besides, a string theory D-brane supports among other fields a U(1) gauge field reflecting open strings attached to the brane. We demonstrate how the interaction of the tachyon with the U(1) gauge field drives cosmological creation of massless particles and estimate the resulting reheating at the end of inflation.

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