Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2007-01-30
Phys.Lett.B648:97-106,2007
Physics
High Energy Physics
High Energy Physics - Theory
7 pages, 4 figures
Scientific paper
10.1016/j.physletb.2007.02.055
As a first step towards a strong coupling expansion of Yang-Mills theory, the SU(2) Yang-Mills quantum mechanics of spatially constant gauge fields is investigated in the symmetric gauge, with the six physical fields represented in terms of a positive definite symmetric (3 x 3) matrix S. Representing the eigenvalues of S in terms of elementary symmetric polynomials, the eigenstates of the corresponding harmonic oscillator problem can be calculated analytically and used as orthonormal basis of trial states for a variational calculation of the Yang-Mills quantum mechanics. In this way high precision results are obtained in a very effective way for the lowest eigenstates in the spin-0 sector as well as for higher spin. Furthermore I find, that practically all excitation energy of the eigenstates, independently of whether it is a vibrational or a rotational excitation, leads to an increase of the expectation value of the largest eigenvalue <\phi_3>, whereas the expectation values of the other two eigenvalues, <\phi_1> and <\phi_2>, and also the component
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