Concept
Wick rotation
Related publications (5)
The Källén-Lehmann representation in de Sitter spacetime
Manuel Loparco, Kamran Salehi Vaziri
We study two-point functions of symmetric traceless local operators in the bulk of de Sitter spacetime. We derive the Kallen-Lehmann spectral decomposition for any spin and show that unitarity implies its spectral densities are nonnegative. In addition, we ...
New York2023Accurate Description of Nuclear Quantum Effects with High-Order Perturbed Path Integrals (HOPPI)
Michele Ceriotti, Venkat Kapil
Imaginary time path-integral (PI) simulations that account for nuclear quantum effects (NQE) beyond the harmonic approximation are increasingly employed together with modern electronic-structure calculations. Existing PI methods are applicable to molecules ...
AMER CHEMICAL SOC2020Tailoring the time-dependent recovery of shape memory polymers
John Christopher Plummer, Charly David Azra
On application of heat, shape memory polymers (SMPs) are able to revert to a primary shape from a secondary shape induced by mechanical deformation. It may be desirable to induce shape recovery at controlled rates under quasi-isothermal conditions, e. g. i ...
Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2012Dynamics of individual rotational states in an electrostatic guide for neutral molecules
Andreas Osterwalder, Benjamin Bertsche
The guiding properties of individual rotational states of deuterated ammonia inside an electrostatic hexapole guide are presented. The guide is combined with resonance enhanced multiphoton ionization detection to assess the guiding probabilities and veloci ...
2011Feshbach resonances in the water molecule revealed by state-selective spectroscopy
Thomas Rizzo, Pavlo Maksyutenko, Maxim Grechko
We employ triple-resonance vibrational overtone excitation to access quasibound states of water from several fully characterized bound states of the molecule. Comparison of the measured dissociation spectra allows a rigorous assignment of rotational quantu ...
American Institute of Physics2010