Results 31 to 40 of about 991,760 (293)

Some applications of excited-state-excited-state transition densities [PDF]

Physical Review A, 1975
We derive an approximation for transition moments between excited states consistent with the approximations and assumptions normally used to obtain transition moments betwen the ground and excited states in the random-phase approximation and its higher-order approximations. We apply the result to the calculation of the photoionization cross sections of
Yeager, D. L., Nascimento, M. A. C., McKoy, V.   +2 more
openaire   +2 more sources

Subsystem distances between quasiparticle excited states

Journal of High Energy Physics, 2022
We investigate the subsystem Schatten distance, trace distance and fidelity between the quasiparticle excited states of the free and the nearest-neighbor coupled fermionic and bosonic chains and the ferromagnetic phase of the spin-1/2 XXX chain.
Jiaju Zhang, M. A. Rajabpour
doaj   +1 more source

Spatiotemporal Fluctuation Induced Transition in a Tumor Model with Immune Surveillance

, 2006
We report on a simple model of spatial extend anti-tumor system with a fluctuation in growth rate, which can undergo a nonequilibrium phase transition.
B. Q. Ai, C. W. Gardiner, J. D. Murray, N. G. van Kampen, P. E. Kloeden, Wei-Rong Zhong, Yuan-Zhi Shao, Zhen-Hui He   +7 more
core   +1 more source

Singlet Excited States of Anions with Higher Main Group Elements

, 2013
Previous studies have shown that dipole-bound excited states exist for certain small anions. However, valence excited states have been reported for some closed-shell anions, but those with singlet valence excited states have, thus far, contained a single
Fortenberry, Ryan C.
core   +1 more source

Calculating vibrational excited state absorptions with excited state constrained minimized energy surfaces

The Journal of Physical Chemistry A, 2023
The modeling and interpretation of vibrational spectra are crucial for studying reaction dynamics using vibrational spectroscopy. Previous theoretical developments have mainly focused on fundamental vibrational transitions. In this study, we present a new method that uses excited state constrained minimized energy surfaces (CMES) to describe ...
Yiwen Wang, Zehua Chen, Yang Yang
openaire   +2 more sources

Correlations in excited states of local Hamiltonians [PDF]

, 2011
Physical properties of the ground and excited states of a $k$-local Hamiltonian are largely determined by the $k$-particle reduced density matrices ($k$-RDMs), or simply the $k$-matrix for fermionic systems---they are at least enough for the calculation ...
A. J. Coleman, Bei Zeng, D. M. Greenberger, J. Cioslowski, Jianxin Chen, Zhaohui Wei, Zhengfeng Ji   +6 more
core   +1 more source

Excited States of Ladder-type Poly-p-phenylene Oligomers

, 2000
Ground state properties and excited states of ladder-type paraphenylene oligomers are calculated applying semiempirical methods for up to eleven phenylene rings. The results are in qualitative agreement with experimental data.
A. Köhler, C. Møller, D. Guo, D. Yaron, Florian Gebhard, G. A. Petersson, G. D. Mahan, G. Wegner, Heinz Bässler, J. A. Pople, J. Cornil, J. E. Ridley, J. Grimme, J. J. P. Stewart, J. S. Dewar, J.-W. van der Horst, Jörg Rissler, M. C. Zerner, M. G. Harrison, M. Knupfer, M. Rohlfing, M. S. Gordon, M. Y. Larentiev, P. C. Hariharan, P. C. Hariharan, Peter Schwerdtfeger, R. Ditchfield, S. Abe, S. Barth, S. F. Alvarado, T. Pauck, U. Scherf, V. I. Archipov, W. J. Hehre   +33 more
core   +2 more sources

Mean parity of single quantum excitation of some optical fields in thermal environments

, 2010
The mean parity (the Wigner function at the origin) of excited binomial states, excited coherent states and excited thermal states in thermal channel is investigated in details.
Carmichael H J, Darwish M, Dodonov V V, Gardiner C, Kenfack A, Shang-Bin Li, Stoler D   +6 more
core   +1 more source

Is it possible to construct excited-state energy functionals by splitting k-space?

, 2009
We show that our procedure of constructing excited-state energy functionals by splitting k-space, employed so far to obtain exchange energies of excited-states, is quite general.
Ayers, Dirac, Dreizler, Fermi, Gross, Gunnarsson, Gázquez, Görling, Harbola, Harbola, Harbola, Harbola, Hohenberg, Jones, Kittel, Kohn, Kohn, Levy, M. Hemanadhan, Manoj K. Harbola, March, Nagy, Nagy, Oliveira, Parr, Pathak, Perdew, Perdew, Rahaman, Samal, Samal, Sen, Singh, Theophilou, Thomas, von Barth, von Weizsacker, Ziegler   +37 more
core   +1 more source

Organoids in pediatric cancer research

FEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source