Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Upendra Harbola"'
Spontaneous and stimulated resonant inelastic X-ray Raman scattering signals are calculated using the Keldysh-Schwinger closed-time path loop and expressed as overlaps of Doorway and Window electron-hole wavepackets. These are recast in terms of the
Externí odkaz:
http://arxiv.org/abs/0901.2939
Autor:
Deep Mukherjee, Upendra Harbola
Publikováno v:
The Journal of Physical Chemistry A. 127:4388-4393
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4153c0c956b2725e6a71f8afc5441cb
https://doi.org/10.1021/acs.jpca.3c00310
https://doi.org/10.1021/acs.jpca.3c00310
Autor:
Gopika Krishnan, Upendra Harbola
Publikováno v:
Physical Review E. 106
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::072aeef226b134dfd22e8aeb3ff34371
https://doi.org/10.1103/physreve.106.064604
https://doi.org/10.1103/physreve.106.064604
Autor:
Deep Mukherjee, Upendra Harbola
Publikováno v:
The Journal of Physical Chemistry A. 125:8417-8425
We calculate the photo-ionization time delay for extended, linear, π-conjugated molecules. Ionization can be realized as scattering of an electron from bound to continuum states due to interaction with an ionizing radiation field. This allows us to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69849b7dfaaff6eefb5ce2c0c46477aa
https://doi.org/10.1021/acs.jpca.1c06350
https://doi.org/10.1021/acs.jpca.1c06350
Publikováno v:
Physical Review E. 105
We analyze the dynamics of quantum supercooled liquids in terms of tagged particle dynamics. Unlike the classical case, uncertainty in the position of a particle in quantum liquid leads to qualitative changes. We demonstrate these effects in the dyna
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3eb618e6cdd5be8cb1c967c3a4d1e83
https://doi.org/10.1103/physreve.105.054136
https://doi.org/10.1103/physreve.105.054136
Autor:
Gopika Krishnan, Upendra Harbola
Publikováno v:
International Journal of Modern Physics B. 36
Supercooled state of a liquid is characterized by extremely slow and spatially heterogeneous dynamics attributed to caging of particles by their neighbors. The dynamics of cages in a model 2D supercooled liquid is studied by analyzing single particle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9754b2b06f4340e37bb3196bbd2ea43
https://doi.org/10.1142/s0217979222500655
https://doi.org/10.1142/s0217979222500655
Publikováno v:
The Journal of Physical Chemistry A. 123:10594-10598
Spontaneous light emission from a current-carrying molecular junction is analyzed. There are two leading processes, fluorescence and electroluminescence, as defined using Liouville space diagrams within the perturbative method, that contribute to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6a6828603d9183ba270737df3898a4e
https://doi.org/10.1021/acs.jpca.9b09917
https://doi.org/10.1021/acs.jpca.9b09917
Autor:
Upendra Harbola, Hari Kumar Yadalam
Publikováno v:
Physical Review B. 102
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6df29552f839e96eab04cf5450869681
https://doi.org/10.1103/physrevb.102.079901
https://doi.org/10.1103/physrevb.102.079901
Publikováno v:
The journal of physical chemistry. A. 124(28)
The photoionization time of C2H4 is calculated as a model for π-conjugated molecular systems. Analytical results are obtained using the Wigner phase delay, which is compared with energy-streaking measurements. We find that, although the ionization t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b0c76111a5f25e49b987aface777425
https://pubmed.ncbi.nlm.nih.gov/32830968
https://pubmed.ncbi.nlm.nih.gov/32830968
Publikováno v:
The journal of physical chemistry letters. 11(5)
Electroluminescence from a current-carrying molecular junction at steady state is simulated. (Charge) particle conservation and energy conservation are satisfied by a perturbative expansion in the radiation/matter coupling. Our approach makes it poss
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3cbb621b13361161fe12c7ef5a8e6cf8
https://pubmed.ncbi.nlm.nih.gov/32046490
https://pubmed.ncbi.nlm.nih.gov/32046490