Gravitino production in the early universe.

  • Context: Graduate 
  • Thread starter Thread starter pleasehelpmeno
  • Start date Start date
  • Tags Tags
    Early universe Universe
Click For Summary
SUMMARY

Gravitinos are produced during the reheating phase following cosmic inflation, particularly through the mechanism of fermionic preheating. This process occurs as the inflaton field decays directly into gravitinos, which are predicted by supersymmetry. The oscillation of the inflaton around its minima during reheating is analogous to symmetry breaking, facilitating the emergence of gravitinos. The discussion references a relevant paper that details the fermionic processes involved in this phenomenon.

PREREQUISITES
  • Understanding of cosmic inflation and its phases
  • Knowledge of supersymmetry and its implications
  • Familiarity with fermionic preheating mechanisms
  • Basic concepts of particle physics, particularly gravitinos and their properties
NEXT STEPS
  • Read the paper "Fermionic Processes in Gravitino Production" available at http://arxiv.org/pdf/hep-ph/0701104.pdf
  • Explore the role of the inflaton field in cosmic inflation dynamics
  • Investigate the implications of supersymmetry in particle physics
  • Study the concept of symmetry breaking in quantum field theory
USEFUL FOR

Researchers in theoretical physics, cosmologists studying the early universe, and anyone interested in the implications of supersymmetry and particle production mechanisms during reheating.

pleasehelpmeno
Messages
154
Reaction score
0
Hi again not sure if to post here or in the beyond SM section, but because it is to do with early universe/inflation i posted here.

I have been reading that gravitinos can be produced during reheating after inflation (particular in fermionic preheating). Does anyone know why fermionic preheating in particular, is it because the inflaton decays directly into these gravitinos.

Also are these gravitinos present because the reheating phase or osciallting inflaton around the minima is analogous to symmetry breaking so grvaitinos arise out of that.
 
Space news on Phys.org
Well considering gravitinos are predicted in supersymmetry. That may or may not exist along with the graviton for that matter lol.

One paper on it is this one.

http://arxiv.org/pdf/hep-ph/0701104.pdf

It may help answer your query as it shows the fermionic processes
 

Similar threads

Graduate Inflation, as a tool for supersymmetry breaking
  • · Replies 3 ·
Replies
3
Views
2K
Graduate How are inflaton particles that drive the early inflation created?
  • · Replies 8 ·
Replies
8
Views
18K
Graduate Late Photons from the Early Universe?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Temperature at beginning of Electroweak Epoch?
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Inflation and Monopoles: Exploring the Mysteries of Cosmic Expansion
  • · Replies 43 ·
2
Replies
43
Views
6K
Undergrad Some questions about Cosmic Inflation
  • · Replies 4 ·
Replies
4
Views
5K
Graduate What is the true purpose of inflation in the early universe?
  • · Replies 41 ·
2
Replies
41
Views
5K
High School Ratio between the sizes of the Observed and the Entire Universe
  • · Replies 7 ·
Replies
7
Views
4K
Graduate 60 efolds with no inflaton, no slow roll, no reheating-QEG's apt to be right
  • · Replies 24 ·
Replies
24
Views
7K
Graduate Higgs inflation and quadratic gravity
  • · Replies 1 ·
Replies
1
Views
4K