We consider the Quasilocal Quark Model of NJL type including vector and axial-vector four-fermion interaction with derivatives. The mass spectrum for the ground and first excited states is obtained. The chiral symmetry restoration sum rules in these channels are imposed as matching rules to QCD at intermediate energies and a set of constraints on parameters of QQM is performed.

The photodetachment cross section of He has been measured in the photon energy range 2.9 . . . 3.3 eV in order to investigate doubly excited states. Measurements were made channel specific by selectively detecting the residual He atoms left in a particular excited state following detachment. Three Feshbach resonances were found in the He(1s2p P)+e(ǫp) partial cross section: a S resonance below ...

We study a d−dimensional FRW universe, containing a perfect fluid with p = wρ and 1 d−1 ≤ w ≤ 1, and find a correspondence principle similar to that of Horowitz and Polchinski in the black hole case. This principle follows quite generally from thermodynamics and the conservation of energy momentum tensor, and can be stated along similar lines as in the black hole case: “When the temperature T o...

We determine the energies of the excited states of a heavy-light meson Q¯ q, with a static heavy quark and light quark with mass approximately that of the strange quark from both quenched lattices and with dynamical fermions. We are able to explore the energies of orbital excitations up to L=3, the spin-orbit splitting up to L=2 and the first radial excitation. These b¯ s mesons will be very na...

We explore further the idea that the lattice QCD data for hadron properties in the region mπ > 0.2GeV 2 can be described by the constituent quark model. This leads to a natural explanation of the fact that nucleon excited states are generally stable for pion masses greater than their physical excitation energies. Finally we apply these same ideas to the problem of how pentaquarks might behave i...

The ground-state three-quark (3Q) potential V g.s. 3Q and the excited-state 3Q potential V e.s. 3Q are studied using SU(3) lattice QCD at the quenched level. For more than 300 patterns of the 3Q systems, the ground-state potential V g.s. 3Q is investigated in detail in lattice QCD with 12 × 24 at β = 5.7 and with 16 × 32 at β = 5.8, 6.0. As a result, the ground-state potential V g.s. 3Q is foun...

We have designed and synthesized a molecular dyad comprising a carotenoid pigment linked to a fullerene derivative (C-C(60)) in which the carotenoid acts both as an antenna for the fullerene and as an electron transfer partner. Ultrafast transient absorption spectroscopy was carried out on the dyad in order to investigate energy transfer and charge separation pathways and efficiencies upon exci...

Energetic materials store a large amount of chemical energy that can be readily converted into mechanical energy via decomposition. A number of different ignition processes such as sparks, shocks, heat, or arcs can initiate the excited electronic state decomposition of energetic materials. Experiments have demonstrated the essential role of excited electronic state decomposition in the energy c...

The photoluminescence properties of a thermally activated delayed fluorescence emitter, 1,2-bis(carbazol-9-yl)-4,5-dicyanobenzene (2CzPN), doped in a host matrix consisting of 1,3-bis(9-carbazolyl)benzene and a polar inert molecule, camphoric anhydride (CA), in various concentrations have been investigated. It is found that the addition of CA stabilizes only the lowest singlet excited state (S1...

Molecular Dynamics simulations using a surface-hopping method for transitions between different electronic states are employed to study the dynamics following photoexcitation of the Ba(Ar)125 cluster. The results are used to interpret spectroscopic experiments on large, size-distributed Ba(Ar)n clusters. The dynamics of the coupled electronic-nuclear motions in the cluster involves transitions ...