LOW-LYING DIBARYON STATES IN A SYMMETRY ANALYSIS

2003 ◽  
Vol 18 (02n06) ◽  
pp. 414-417
Author(s):  
YUXIN LIU ◽  
JINGSHENG LI ◽  
Chengguang Bao
Keyword(s):  
Surface Structure ◽  
Structure Analysis ◽  
Symmetry Analysis ◽  
Wave Functions ◽  
Color Channel ◽  
Nodal Surface ◽  
Quantum Numbers ◽  
Color Channels

The dibaryon states as six-quark clusters of exotic QCD states are investigated in this talk. With the inherent nodal surface structure analysis, the wave functions of the six-quark clusters (in another word, the dibaryons) are classified. The contribution of the hidden color channels are discussed. The quantum numbers of the low-lying dibaryon states are obtained. The States [ΩΩ](0,0+), [ΩΩ](0,2-), [Ξ* Ω](1/2,0+), [ΞΩ](1/2,1+), [Σ* Σ*](0,4-) and the hidden color channel states with the same quantum numbers are proposed to be the candidates of dibaryons, which may be observed in experiments.

Quantum Theory

2017 ◽  
Author(s):  
Frank S. Levin
Keyword(s):  
Quantum Mechanics ◽  
Quantum Theory ◽  
Uncertainty Principle ◽  
Quantum Spin ◽  
Quantum States ◽  
Wave Functions ◽  
Symbolic Representations ◽  
Quantum Numbers ◽  
The Subject ◽  
Heisenberg's Uncertainty Principle

The subject of Chapter 8 is the fundamental principles of quantum theory, the abstract extension of quantum mechanics. Two of the entities explored are kets and operators, with kets being representations of quantum states as well as a source of wave functions. The quantum box and quantum spin kets are specified, as are the quantum numbers that identify them. Operators are introduced and defined in part as the symbolic representations of observable quantities such as position, momentum and quantum spin. Eigenvalues and eigenkets are defined and discussed, with the former identified as the possible outcomes of a measurement. Bras, the counterpart to kets, are introduced as the means of forming probability amplitudes from kets. Products of operators are examined, as is their role underpinning Heisenberg’s Uncertainty Principle. A variety of symbol manipulations are presented. How measurements are believed to collapse linear superpositions to one term of the sum is explored.

scholarly journals Is two-pole’s $$\varLambda (1405)$$ one state or two?

2021 ◽  
Vol 81 (9) ◽  
Author(s):  
Zhong-Yu Wang ◽  
Hiwa A. Ahmed ◽  
C. W. Xiao
Keyword(s):  
Single Channel ◽  
Wave Functions ◽  
Riemann Sheet ◽  
Lower Mass ◽  
Composite State ◽  
Channel Interaction ◽  
Quantum Numbers ◽  
Coupled Channels ◽  
Pole Structure

AbstractTo understand the nature of two poles for the $$\varLambda (1405)$$ Λ ( 1405 ) state, we revisit the interactions of $${\bar{K}}N$$ K ¯ N and $$\pi \Sigma $$ π Σ with their coupled channels, where two-pole structure is found in the second Riemann sheet. We also dynamically generate two poles in the single channel interaction of $${\bar{K}}N$$ K ¯ N and $$\pi \Sigma $$ π Σ , respectively. Moreover, we make a further study of two poles’ properties by evaluating the couplings, the compositeness, the wave functions, and the radii for the interactions of four coupled channels, two coupled channels and the single channel. Our results show that the nature of two poles is unique. The higher-mass pole is a pure $${\bar{K}} N$$ K ¯ N molecule, and the lower-mass one is a composite state of mainly $$\pi \Sigma $$ π Σ with tiny component $${\bar{K}} N$$ K ¯ N . From our results, one can conclude that the $$\varLambda (1405)$$ Λ ( 1405 ) state may be overlapped with two different states of the same quantum numbers.

Internal Rotation Spectrum in the Ground State of cis Propionyl Fluoride

1981 ◽  
Vol 36 (12) ◽  
pp. 1327-1333
Author(s):  
F. Scappini ◽  
H. Dreizler
Keyword(s):  
Internal Rotation ◽  
Ground State ◽  
Wave Functions ◽  
Rigid Rotor ◽  
Quantum Numbers ◽  
High K ◽  
Forbidden Transitions ◽  
Low K ◽  
Rotation Spectrum

AbstractThe microwave ground state spectrum of cis propionyl fluoride has been investigated expanding, with respect to a previous study, the range of the quantum numbers of the transitions, J up to 40 and K up to 18. At low K the spectrum resembles that of an asymmetric rigid rotor, except in a number of cases where the lines are split into A, E doublets. At intermediate and high K the mixing of the if-doublet rigid rotor wave functions makes forbidden transitions appear. The results of the analysis of the methyl top internal rotation ground state splittings are: V3 = 2350 ± 11 cal/mole, ≮ (i, a) = 32.7° ±2.0°, and Iα = 3.18 ± 0.03 uÅ2.

Surface structure analysis of Si(111)−Bi by X-ray diffraction — Approach to the solution of the phase problem

1987 ◽  
Vol 191 (3) ◽  
pp. L825-L834 ◽  
Author(s):  
Toshio Takahashi ◽  
Shinichiro Nakatani ◽  
Tetsuya Ishikawa ◽  
Seishi Kikuta
Keyword(s):  
Surface Structure ◽  
Structure Analysis ◽  
Phase Problem ◽  
X Ray Diffraction ◽  
X Ray
Sign in / Sign up

Export Citation Format

Share Document