105,291 research outputs found
Advance in dynamical spontaneous symmetry breaking
Recently, a condition is derived for a nontrivial solution of the
Schwinger-Dyson equation to be accompanied by a Goldstone bound state in a
special quantum electrodynamics model. This result is extended and a new form
of the Goldstone theorem is obtained in a general quantum field theory
framework.Comment: 3 pages, LaTeX, no figure
Anomalous Dimension in the Solution of the Barenblatt's Equation
A new method is presented to obtain the anomalous dimension in the solution
of the Barenblatt's equation. The result is the same as that in the
renormalization group (RG) approach. It gives us insight on the perturbative
solution of the Barenblatt's equation in the RG approach. Based on this
discussion, an improvement is made to take into account, in more complete way,
the nonlinear effect, which is included in the Heaviside function in higher
orders. This improved result is better than that in RG approach.Comment: 17 pages, LaTex, no figur
3-D Microwave Imaging for Breast Cancer
We introduce a novel microwave imaging technique for breast cancer detection. Our approach provides a one-pass inverse image solution, which is completely new and unprecedented, unrelated to tomography or radar-based algorithms, and unburdened by the optimization toil which lies at the heart of numerical schemes. It operates effectively at a single frequency, without requiring the bandwidth of radar techniques. Underlying this new method is our unique Field Mapping Algorithm (FMA), which transforms electromagnetic fields acquired upon one surface, be it through outright measurement or some auxiliary computation, into those upon another in an exact sense
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