ADS/CFT Applied To Vector Meson Emission From A Heavy Accelerated Nucleus

TL;DR

This paper applies AdS/CFT correspondence to model vector meson emission from a highly accelerated heavy nucleus, predicting radiation spectra and comparing results with experimental data from RHIC.

Contribution

It introduces a novel application of AdS/CFT to describe vector meson radiation from accelerated nuclei, providing new theoretical predictions for experimental spectra.

Findings

Radiation rate is finite but small for high-speed nuclei.

Ultra-high accelerations lead to significant vector meson emission.

Predicted spectra align with RHIC transverse momentum data.

Abstract

We consider a classical source, moving on the 4-D boundary of a 5-D ADS space, that is coupled to quantum fields residing in the bulk. Bremsstrahlung-like radiation of the corresponding quanta is shown to occur and the S-matrix is derived assuming that the source is sufficiently massive so that recoil effects are negligible. As an illustrative example, using the ADS hard-wall model, we consider vector mesons coupled to a heavy nucleus that is moved around at high speed in an accelerator ring. The meson radiation rate is found to be finite but small. Much higher accelerations, such as when a pair of heavy ions suffer an ultra peripheral collision, cause substantial emission of various excited vector mesons. Predictions are made for the spectrum of this radiation. A comparison is made against existing photon-pomeron fusion calculations for the transverse momentum spectra of rho mesons. These have the same overall shape as the recently measured transverse momentum distributions at RHIC.