Now showing items 1-10 of 66
Density and Current Density as Coordinates for a System of Interacting Bosons at Absolute Zero
(The American Institute of Physics, 1971-06)
The quantum field Hamiltonian expressed in terms of density and current density variables has been employed together with the equal‐time commutation relations among these variables to find the ground state energy and the ...
Modification of Stokes' law for a heated sphere in liquid helium II
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1971-07)
It is shown that the counterflow which occurs at low heat inputs in liquid helium below the λ point modifies the wake behind a steadily moving sphere. The result is valid for a low Reynolds number and limits on the range ...
Dipole Moments of Dimethylsiloxane Oligomers and Poly(dimethylsiloxane)
(The American Institute of Physics, 1971-06-15)
Dielectric constants at 20, 30, 40, and 50°C have been determined for pure liquid dimethylsiloxane oligomers (CH3)3Si–[OSi(CH3)2]xOSi(CH3)3 having chain lengths corresponding to x = 3,5,7,and9x=3,5,7,and9. Mean‐square ...
Precision energy measurements of gamma rays occurring in the decays of 165Dy and 193Os
(Elsevier, 1971-06-15)
A curved-crystal spectrometer has been utilized to obtain energy measurements of 22 gamma rays between 73 keV and 715 keV occurring in the decays of and . Some of these energy measurements have sufficiently small uncertainties ...
Renormalization of some one-space dimensional quantum field theories by unitary transformation
(Elsevier, 1971-11)
The one-space dimensional interaction is renormalized by unitary transformation. A uniformly convergent sequence of unitary operators is defined which transforms the sequence of cut-off Hamiltonians, arranged in order of ...
Structure of the Generalized Veneziano Amplitudes. II. Possible Group Theoretic Content
(The American Institute of Physics, 1971-10)
An attempt is made to generalize a result of Vilenkin that the beta function (being adopted as Veneziano formula for four‐particle processes) appears as the kernel (in the integral) of the irreducible representation (in ...
Second class currents and mirror beta decays
(Elsevier, 1971-08-09)
Answers are given to some questions raised by Lipkin concerning the relation between mirror asymmetry in beta-decay and second-class currents. Mirror asymmetry (not of electromagnetic origin) is evidence for second-class ...
Renormalization of the one-space dimensional Yukawa model by unitary transformation
(Elsevier, 1971-11)
A unitary transformation is used to renormalize the one-space dimensional Yukawa Model in a box. A momentum cut-off dependent sequence of unitary transformations is constructed such that weak limit matrix elements of the ...
Pion multiplicity and Regge trajectories
(Elsevier, 1971-06-07)
Assuming that the zero multiplicity limit of the Poisson distribution in multiparticle production is relaxed to the non diffractive part of the elastic scattering cross section, we obtain the pion multiplicity expressed ...
Forced non-linear vibrations of a damped sandwich beam
(Elsevier, 1971-07-08)
Forced, damped, non-linear, low-frequency flexural motions of a clamped-clamped sandwich beam with thin face sheets and a soft viscoelastic core are examined experimentally and theoretically. The theory employed neglects ...