Zobrazeno 1 - 10
of 125
pro vyhledávání: '"Roger F. Loring"'
Autor:
Roger F. Loring
Publikováno v:
The journal of physical chemistry. A. 126(36)
Electric force microscopy, in which a charged probe moves above a surface, can measure thermally generated electric field fluctuations from the sample. Noncontact friction measurements of energy loss from the probe have been performed over insulators
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ae0c55c67c7783e59ac3a4d18b91415
https://pubmed.ncbi.nlm.nih.gov/36067457
https://pubmed.ncbi.nlm.nih.gov/36067457
Autor:
Kritanjan Polley, Roger F. Loring
Publikováno v:
The Journal of chemical physics. 156(12)
Thermofield dynamics is an exactly correct formulation of quantum mechanics at finite temperature in which a wavefunction is governed by an effective temperature-dependent quantum Hamiltonian. The optimized mean trajectory (OMT) approximation allows
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f5bbc64c18c73ce375fabbfe0fcd56c
https://pubmed.ncbi.nlm.nih.gov/35364894
https://pubmed.ncbi.nlm.nih.gov/35364894
Autor:
Roger F. Loring
Publikováno v:
Annual review of physical chemistry. 73
Multidimensional optical spectra are measured from the response of a material system to a sequence of laser pulses and have the capacity to elucidate specific molecular interactions and dynamics whose influences are absent or obscured in a convention
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df389592db2d1349bb1d23f880ca7e94
https://pubmed.ncbi.nlm.nih.gov/35061513
https://pubmed.ncbi.nlm.nih.gov/35061513
Autor:
Roger F. Loring, Kritanjan Polley
Publikováno v:
The Journal of chemical physics. 154(19)
Two-dimensional vibrational–electronic (2DVE) spectra probe the effects on vibronic spectra of initial vibrational excitation in an electronic ground state. The optimized mean trajectory (OMT) approximation is a semiclassical method for computing n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2bc896295cfb68343916d8a323e22ff2
https://pubmed.ncbi.nlm.nih.gov/34240897
https://pubmed.ncbi.nlm.nih.gov/34240897
Autor:
Roger F. Loring, Kritanjan Polley
Publikováno v:
The Journal of chemical physics. 153(20)
Exact quantum dynamics with a time-independent Hamiltonian in a discrete state space can be computed using classical mechanics through the classical Meyer–Miller–Stock–Thoss mapping Hamiltonian. In order to compute quantum response functions fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8c251471e8a48164d7aafea4ed710c5
https://pubmed.ncbi.nlm.nih.gov/33261495
https://pubmed.ncbi.nlm.nih.gov/33261495
Autor:
Roger F. Loring, Kritanjan Polley
Publikováno v:
The journal of physical chemistry. B. 124(44)
We extend the semiclassical optimized mean trajectory (OMT) procedure to calculate electronic spectra for a dimer with excitonic and vibronic interactions. The electronic part of the quantum Hamiltonian is expressed in the Miller-Meyer-Stock-Thoss fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::791362247b664571d6bfe2993be0bf5c
https://pubmed.ncbi.nlm.nih.gov/33108723
https://pubmed.ncbi.nlm.nih.gov/33108723
Publikováno v:
The Journal of Physical Chemistry B. 122:3203-3205
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c66a7c34bc8bc7f36908bae60d832f8e
https://doi.org/10.1021/acs.jpcb.8b00129
https://doi.org/10.1021/acs.jpcb.8b00129
Autor:
Kritanjan Polley, Roger F. Loring
Publikováno v:
The Journal of chemical physics. 150(16)
We present a semiclassical procedure for calculating nonlinear optical spectra from a quantum Hamiltonian with discrete electronic states. The purely electronic Hamiltonian for N states is first mapped to the associated Meyer-Miller Hamiltonian for N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d3b28b5c0f983a9ca369e6e57088af2
https://pubmed.ncbi.nlm.nih.gov/31042922
https://pubmed.ncbi.nlm.nih.gov/31042922
Autor:
Prashanth Ramesh, Roger F. Loring
Publikováno v:
The journal of physical chemistry. B. 122(13)
Time-resolved two-dimensional (2D) infrared spectra of the asymmetric stretch mode of solvated CO2 show distinct features corresponding to ground- and excited-state thermal populations of the bend modes. The time-dependence of these peaks arises in p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::364a9c6344bac91f6039072d55bd23a7
https://pubmed.ncbi.nlm.nih.gov/29385340
https://pubmed.ncbi.nlm.nih.gov/29385340
Autor:
Roger F. Loring
Publikováno v:
The Journal of chemical physics. 146(14)
Mean-trajectory approximations permit the calculation of nonlinear vibrational spectra from semiclassically quantized trajectories on a single electronically adiabatic potential surface. By describing electronic degrees of freedom with classical phas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95e7e48444390af4dd65514782642485
https://pubmed.ncbi.nlm.nih.gov/28411606
https://pubmed.ncbi.nlm.nih.gov/28411606