Spin systems as quantum field theories in inflationary universe: A study with Unruh-DeWitt detectors

Shunichiro Kinoshita, Keiju Murata, Daisuke Yamamoto +1

We propose a method to probe the thermal properties of quantum field theory (QFT) in an inflationary universe simulated by spin systems. Our previous work (arXiv:2410.07587) has de…