Overcoming the Limitation of Spin Statistics in Organic Light Emitting Diodes (OLEDs): Hot Exciton Mechanism and Its Characterization by Soo Wan Park, Dongwook Kim, Young Min Rhee

“…Hot exciton materials enable the conversion of triplet excitons to singlet ones via reverse inter-system crossing from high-lying triplet states and thereby the depopulation of long-lived triplet excitons that are prone to chemical and/or efficiency degradation. …”
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Boson star normal modes by James Hung-Hsu Chan, Sergey Sibiryakov, Wei Xue

“…The computation combines the use of exact wavefunctions for the low-lying bound states and of the Schrödinger approximation for the high-energy excitations.…”
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Theoretical study on ThF+, a prospective system in search of time-reversal violation by Malika Denis, Morten S Nørby, Hans Jørgen Aa Jensen, André Severo Pereira Gomes, Malaya K Nayak, Stefan Knecht, Timo Fleig

“…The low-lying electronic states of ThF ^+ , a possible candidate in the search for $\mathcal{P}$ - and $\mathcal{T}$ -violation, have been studied using high-level correlated relativistic ab initio multi-reference coupled-cluster and configuration interaction approaches. …”
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Eclipsed and Twisted Excimers of Pyrene and 2-Azapyrene: How Nitrogen Substitution Impacts Excimer Emission by Yasi Dai, Filippo Rambaldi, Fabrizia Negri

“…Here, we use time-dependent density functional theory (TD-DFT) calculations to investigate the low-lying exciton states of dimers of pyrene and 2-azapyrene. …”
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Large N master field optimization: the quantum mechanics of two Yang-Mills coupled matrices by Kagiso Mathaba, Mbavhalelo Mulokwe, João P. Rodrigues

“…For the spectrum, we establish that the U(N) traced fundamental constituents remain massless and decoupled from other states, and that bound states develop well defined mass gaps, with the mass of the two degenerate lowest lying bound states being determined with a particularly high degree of accuracy. …”
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Information-Theoretic Features of Many Fermion Systems: An Exploration Based on Exactly Solvable Models by Angel Ricardo Plastino, Diana Monteoliva, Angelo Plastino

“…Also, the behavior of the two lowest lying energy states are crucial in evaluating the system’s complexity.…”
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Photoionization and photofragmentation dynamics of I2 in intense laser fields: a velocity-map imaging study by Allum, F, McManus, J, Denby, O, Burt, M, Brouard, M

“…Photoelectron spectra indicate that these high-lying dissociative states are primarily produced through nonresonant ionization from several molecular orbitals (MO) of the neutral. …”

The 5d-6p VUV Photoabsorption Spectrum of Bi⁺ by Hu Lu, Lazaros Varvarezos, Patrick Hayden, Eugene T Kennedy, Jean-Paul Mosnier, John T Costello

“…Transitions from low-lying excited states associated with the four excited configurations, 5d¹⁰6s²6p6d, 5d¹⁰6s²6p7s, 5d¹⁰6s²6p7p and 5d¹⁰6s6p³, were found to make small contributions to the observed spectrum in the 47–50 nm spectral region. …”
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Be optical lattice clocks with the fractional Stark shift up to the level of 10−19 by Lei Wu, Xia Wang, Ting Wang, Jun Jiang, Chenzhong Dong

“…The energy levels and electric dipole ( $E1$ ) matrix elements of the ground state and low-lying excited states of Be atoms are calculated using the relativistic configuration interaction plus core polarization (RCICP) method. …”
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Proton-neutron pairing, α-like quarteting and ground/excited states of N=Z nuclei by Sandulescu Nicolae

“…It will be shown that the low-lying excited states of these Hamiltonians can be described by breaking a quartet from the ground state condensate and replacing it with an “excited” quartet, an approach which is analogous to the one-broken-pair approximation which is commonly used for like-particle systems.…”
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Excited States Computation of Models of Phenylalanine Protein Chains: TD-DFT and Composite CC2/TD-DFT Protocols by Marine Lebel, Thibaut Very, Eric Gloaguen, Benjamin Tardivel, Michel Mons, Valérie Brenner

“…The present benchmark calculations testify to the validity of time-dependent density functional theory (TD-DFT) when exploring the low-lying excited states potential energy surfaces of models of phenylalanine protein chains. …”
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Many-body dynamics of holes in a driven, dissipative spin chain of Rydberg superatoms by Fabian Letscher, David Petrosyan, Michael Fleischhauer

“…Strong, long-range interactions between atoms in high-lying Rydberg states can suppress multiple Rydberg excitations within a micron-sized trapping volume and yield sizable Rydberg level shifts at larger distances. …”
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Förster resonance energy transfer, absorption and emission spectra in multichromophoric systems. I. Full cumulant expansions and system-bath entanglement by Ma, Jian, Cao, Jianshu

“…(iii) For the emission spectra, the cumulant expansion can give reliable results for localized systems, but fail to provide reliable spectra of the high-lying excited states of a delocalized system, when the system-bath coupling is large and the thermal energy is small. …”
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Negative ion photoelectron spectroscopy of P[subscript 2]N[subscript 3]−: electron affinity and electronic structures of P[subscript 2]N[subscript 3]˙ by Hou, Gao-Lei, Chen, Bo, Hrovat, David A., Borden, Weston Thatcher, Wang, Xue-Bin, Cummins, Christopher C, Transue, Wesley

“…Ab initio electronic structure calculations reveal the existence of five, low-lying, electronic states in the neutral P[subscript 2]N[subscript 3]˙ radical. …”
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A theoretical investigation of the low lying electronic structure of poly(p-phenylene vinylene) by Lavrentiev, M, Barford, W, Martin, S, Daly, H, Bursill, R

“…The energies of the low-lying excited states are calculated using the density matrix renormalization group method. …”

Towards resolving the gallium anomaly by Vedran Brdar, Julia Gehrlein, Joachim Kopp

“…First, we discuss possible biases in the predicted cross section for the detection reaction ν e + 71Ga → e − + 71Ge, which could arise from mismeasurement of the inverse process, 71Ge decay, or from the presence of as yet unknown low-lying excited states of 71Ga. The latter would imply that not all 71Ge decays go to the ground state of 71Ga, so the extraction of the ground state-to-ground state matrix element relevant for neutrino capture on gallium would be incorrect. …”
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Spectroscopic signatures of doorway-mediated intersystem crossing by Bittinger, Kyle Lee

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Ultrafast all-optical switching and laser action in rotaxane by Mroz, M, Perissinotto, S, Virgili, T, Salerno, M, Sforazzini, G, Anderson, H, Lanzani, G

“…This technique shows: (i) charges are generated from higher lying singlet states also in isolated chains (ii) ultrafast optical gain switching is possible in threaded chain. …”

Photoswitchable Molecular Units with Tunable Nonlinear Optical Activity: A Theoretical Investigation by Aggelos Avramopoulos, Heribert Reis, Demeter Tzeli, Robert Zaleśny, Manthos G. Papadopoulos

“…This is explained by invoking the low-lying excited states of NiBDT. It is shown that the second hyperpolarizability can be used as an index, which follows the structural changes induced by photochromism. …”
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Impact of Di- and Poly-Radical Characters on the Relative Energy of the Doubly Excited and <inline-formula><math display="inline"><semantics><mrow><msub><mi>L</mi><mi>a</mi></msu... by Yasi Dai, Juan-Carlos Sancho-García, Fabrizia Negri

“…Owing to their di- and poly-radical character, low-lying excited states dominated by doubly excited configurations are expected to become more important for longer members of both linear and cyclic molecules. …”
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