Determination of the critical exponents in dissipative phase transitions: Coherent anomaly approach

First-order transitions in spin chains coupled to quantum baths

“…Moreover, the spin system is not only sensitive to the properties of non-classical baths, but also to weak magnetic fields, implying that the set-up proposed in this work can be also relevant for the realization of small-scale quantum sensors. Finally, the approaches used in this work can be easily generalized to more complex spin systems [31,32] and spin-bath couplings [33], and in principle allow also to include the effects of coherent sinusoidal drives [34].…”