Recent experimental advancements in ultrafast pump-probe setups drive a growing need for e cient and insightful theoretical methods. This study will delve into the internals of our newly developed method, the Dynamical Projective Operatorial Approach (DPOA). DPOA stands out as a highly e cient model-Hamiltonian method capable of calculating a wide range of single/multi-time single/multi-particle properties, such as excitation populations, out-of-equilibrium Green's functions, TR-ARPES signals, and various response functions. When dealing with transient optical properties, utilizing the DPOA formulation and capitalizing on the weak intensity of the probe pulse, we e ciently compute the linear response of the pumped system to a generic probe pulse, signi cantly accelerating calculations. Alongside the theoretical framework, we present noteworthy results that experimentalists can utilize to establish connections between observed effects and their underlying physical phenomena.
Dynamical Projective Operatorial Approach (DPOA) for Pump-Probe Setups in the Ultrafast Regime
EskandariAsl A.;Avella A.
2024-01-01
Abstract
Recent experimental advancements in ultrafast pump-probe setups drive a growing need for e cient and insightful theoretical methods. This study will delve into the internals of our newly developed method, the Dynamical Projective Operatorial Approach (DPOA). DPOA stands out as a highly e cient model-Hamiltonian method capable of calculating a wide range of single/multi-time single/multi-particle properties, such as excitation populations, out-of-equilibrium Green's functions, TR-ARPES signals, and various response functions. When dealing with transient optical properties, utilizing the DPOA formulation and capitalizing on the weak intensity of the probe pulse, we e ciently compute the linear response of the pumped system to a generic probe pulse, signi cantly accelerating calculations. Alongside the theoretical framework, we present noteworthy results that experimentalists can utilize to establish connections between observed effects and their underlying physical phenomena.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.