Event-by-event fluctuations of magnetic and electric fields in heavy ion collisions
Abstract
We show that fluctuating proton positions in the colliding nuclei generate, on the event-by-event basis, very strong magnetic and electric fields in the direction both parallel and perpendicular to the reaction plane. The magnitude of E and B fields in each event is of the order of mπ2≈1018 Gauss. Implications on the observation of electric dipole in heavy ion collisions is discussed, and the possibility of measuring the electric conductivity of the hot medium is pointed out.
- Publication:
-
Physics Letters B
- Pub Date:
- March 2012
- DOI:
- arXiv:
- arXiv:1111.1949
- Bibcode:
- 2012PhLB..710..171B
- Keywords:
-
- Heavy ion collisions;
- Chiral magnetic effect;
- Fluctuations;
- High Energy Physics - Phenomenology;
- Nuclear Theory
- E-Print:
- 10 pages, 5 figures, new comments in section 3, to appear in Phys. Lett. B