Non-integer Quantum Transition, a True Non-perturbation Effect in Laser-Atom Interaction

We show that in the quantum transition of an atom interacting with an intense laser of circular frequency ω, the energy difference between the initial and the final states of the atom is not necessarily an integer multiple of the quantum energy hω. This kind of non-integer transition is a true non-perturbation effect in laser-atom interaction.

Ti X-Ray Laser Shadowgraphy Experiment

An x-ray laser shadowgraphy experiment was conducted on Xingguang-Ⅱ laser facility in 1996.A multi-layer spherical mirror was used as an imaging element and a high sensitivity CCD camera as a detector.We measured the near-field image of the Ti x-ray laser beam.With a Ti x-ray laser beam as a backlight source,we obtained a clear CU mesh image,demonstrating the potential as advanced diagnostic measurements to study high density plasmas in inertial confinement fusion research.

Collapse of Entangled State and Entropy Increase in an Isolated System

We show that the collapse of the entangled quantum state makes the entropy increase in an isolated system. The second law of thermodynamics is thus proven in its most genera/form.

Computer Simulation of the Electronic Structures and Absorption Spectra for a KMgF3 Crystal Containing a Potassium Vacancy

CASTEP code,based on the density functional theory(DFT)Electronic structures and absorption spectra for a perfect KMgF_(3)crystal and a KMgF_(3)crystal containing a potassium vacancy V_(K)^(-)are optimized using the CASTEP density functional theory code.The calculated results indicate that the perfect KMgF_(3)crystal has no absorption in the visible energy region,however,a KMgF_(3)crystal containing V_(K)^(-)has an additional absorption band peaking at 565 nm,fitting well with the experimental result that KMgF_(3)irradiated by an electron has an additional absorption peak at 565 nm.It is reasonably predicted that the 565 nm absorption band is related to the existence of V_(K)^(-)in the KMgF_(3)crystal created by the electron irradiation.

Variational Calculation in SU(3) Lattice Gauge Theory

Using the Hamiltonian lattice gauge theory,we perform some variational calculations to obtain the ground-state energy of SU(3)gauge field and scalar(0^(++))glueball mass.The agreement of our data with the strong and weak expansion results in the corresponding limits indicates that this method can provide us reliable information in the most interesting medium region.The trial wave function used in our variational method is also proved to be a good first approximation of the ground-state of the SU(3)gauge field.Upgrading this function according to correlations of adjacent plaquettes may mean better result.

Influence of Relativistic Finite Volume Effect of Nucleons on the Dense Matter Properties

The influence of the relativistic finite volume effect of nucleons on the properties of dense nuclear matter is examined at finite temperature and it is found that the abnormal nuclear state can appear at sufficiently high density.Then,by using this methed the phase transition between hadronic matter and quark-gluon plasma is studied.The numerical results show that the value of nucleon radius is important for reproducing this phase transition correctly.

Statistical Separability of the World and Consistency Between Quantum Theory, Relativity, and Causality

We show that the quantum world with non-local states and original statistics is statistically separable. According to relativistic dynamics, the super-luminal signal transmission is impossible. The present quantum theory is therefore consistent with the relativity and the causality.