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The diffusional dynamics and vibrational spectroscopy of molecular hydrogen (H$_2$) in myoglobin (Mb) is characterized. Hydrogen has been implicated in a number of physiologically relevant processes, including cellular aging or…

Chemical Physics · Physics 2024-09-16 Jiri Käser , Kai Töpfer , Markus Meuwly

Hydrogen is one of the few molecules which has been incarcerated in the molecular cage of C$_{60}$ and forms endohedral supramolecular complex H$_2$@C$_{60}$. In this confinement hydrogen acquires new properties. Its translational motion…

The dissociation spectrum of the hydrogen molecular ion by short intense pulses of infrared light is calculated. The time-dependent Schr\"odinger equation is discretized and integrated in position and momentum space. For few-cycle pulses…

Atomic Physics · Physics 2009-11-10 Liang-You Peng , I D Williams , J F McCann

We consider the possibility that solid molecular hydrogen is present in interstellar space. If so cosmic-rays and energetic photons cause ionisation in the solid leading to the formation of H6+. This ion is not produced by gas-phase…

Astrophysics of Galaxies · Physics 2015-05-28 Ching Yeh Lin , Andrew T. B. Gilbert , Mark A. Walker

Recently we reported a high precision optical frequency measurement of the (v,L):(0,2)->(8,3) vibrational overtone transition in trapped deuterated molecular hydrogen (HD+) ions at 10 mK temperature. Achieving a resolution of 0.85…

Atomic Physics · Physics 2017-02-20 J. Biesheuvel , J. -Ph. Karr , L. Hilico , K. S. E. Eikema , W. Ubachs , J. C. J. Koelemeij

We propose a novel explanation for the dilepton excess observed in heavy ion collisions at invariant masses below 1 GeV. We argue that the presence of local parity breaking due to a time-dependent isosinglet and/or isotriplet pseudoscalar…

High Energy Physics - Phenomenology · Physics 2010-10-25 Alexander Andrianov , Vladimir Andrianov , Domenec Espriu , Xumeu Planells

We investigated the effect of deuteration on the vibrational ground state of the hydrated hydroxide anion using a nine-dimensional quantum dynamical model for the case of J=0. The propagation of the nuclear wave function has been performed…

Chemical Physics · Physics 2008-10-14 Yonggang Yang , Oliver Kühn

Theoretical investigations of the hyperfine structure of the hydrogen molecular ion (one electron and two protons) are discussed. The nuclear spin-rotation interaction has been found to be of the same sign as in the hydrogen molecule and…

Atomic Physics · Physics 2008-02-03 J. F. Babb

In the present work, the analytical description of an intermolecular vibrational energy transfer, analyzed by two dimensional infrared spectroscopy, is established. The energy transfer process takes place between the dark combination states…

Chemical Physics · Physics 2013-09-04 Albert A. Villaeys , Kuo Kan Liang

The density response of charged liquids contains a collective excitation known as the plasmon. In holographic systems with translational invariance the origin of this collective excitation is traced back to the presence of zero-sound. Using…

High Energy Physics - Theory · Physics 2019-07-26 Aurelio Romero-Bermúdez

Qualitative changes in the collective excitation spectra of the $\rho$-meson triplet in neutron matter is studied, with particular emphasis on the breaking of the discrete $p\leftrightarrow n$ symmetry. The appearance of additional branches…

Nuclear Theory · Physics 2009-10-28 Abhee K. Dutt-Mazumder , Anirban Kundu , Binayak Dutta-Roy , Triptesh De

The infrared (IR) spectra of protonated water clusters encode precise information on the dynamics and structure of the hydrated proton. However, the strong anharmonic coupling and quantum effects of these elusive species remain puzzling up…

The propagation of waves through the marginal ice zone (MIZ) and deeper into pack ice is a key phenomenon that influences the breakup and drift of sea ice. When waves in ice propagate through a solid, non-cracked, thick enough sea ice…

Conclusive crystal structure determination of the high pressure phases of hydrogen remains elusive due to lack of core electrons and vanishing wave vectors, rendering standard high-pressure experimental methods moot. Ab-initio DFT…

Materials Science · Physics 2024-07-30 Meng Yang , Yishan Zhou , Rajesh Jana , Takeshi Nakagawa , Yunhua Fu , Thomas Meier

A concept of \emph{isospin blocking} in the process of isospin diffusion in heavy-ion collisions is raised. Generally, in the process of isospin diffusion, isospin asymmetry would diffuse from the place with large asymmetry to the place…

Nuclear Theory · Physics 2022-08-31 Ya-Fei Guo , Gao-Chan Yong

The origin of boson peak -- an excess of density of states over Debye's model in glassy solids -- is still under intense debate, among which some theories and experiments suggest that boson peak is related to van-Hove singularity. Here we…

Two-dimensional simulations are conducted to investigate the direct initiation of cylindrical detonation in hydrogen/air mixtures with detailed chemistry. The effects of hotspot condition and mixture composition gradient on detonation…

Fluid Dynamics · Physics 2023-01-23 Xiongbin Jia , Yong Xu , Hongtao Zheng , Huangwei Zhang

A theoretical study of the intense-field single ionization of molecular hydrogen or deuterium oriented either parallel or perpendicular to a linear polarized laser pulse (400 nm) is performed for different internuclear separations and pulse…

Quantum Physics · Physics 2015-05-14 Yulian V. Vanne , Alejandro Saenz

We study the effect of decoherence on the sub-Planck scale structures of the vibrational wave packet of a molecule. The time evolution of these wave packets is investigated under the influence of a photonic or phononic environment. We…

Quantum Physics · Physics 2009-05-09 Suranjana Ghosh , Utpal Roy , Claudiu Genes , David Vitali

By applying an unrestriced Hartree-Fock approximation and a Random Phase approximation to multiband Peierls-Hubbard Hamiltonians, we determine the phonon mode structure in models of transition metal oxides in the presence of intrinsic…

Strongly Correlated Electrons · Physics 2009-09-29 I. Martin , R. J. McQueeney , A. R. Bishop , Z. G. Yu