EFFECTS OF HEAVY BOSONIC EXCITATIONS ON QED VACUUM
نویسندگان
چکیده
منابع مشابه
Effects of heavy modes on vacuum stability in supersymmetric theories
We study the effects induced by heavy fields on the masses of light fields in supersymmetric theories, under the assumption that the heavy mass scale is much higher than the supersymmetry breaking scale. We show that the square-masses of light scalar fields can get two different types of significant corrections when a heavy multiplet is integrated out. The first is an indirect level-repulsion e...
متن کاملthe effects of error correction methods on pronunciation accuracy
هدف از انجام این تحقیق مشخص کردن موثرترین متد اصلاح خطا بر روی دقت آهنگ و تاکید تلفظ کلمه در زبان انگلیسی بود. این تحقیق با پیاده کردن چهار متد ارائه اصلاح خطا در چهار گروه، سه گروه آزمایشی و یک گروه تحت کنترل، انجام شد که گروه های فوق الذکر شامل دانشجویان سطح بالای متوسط کتاب اول passages بودند. گروه اول شامل 15، دوم 14، سوم 15 و آخرین 16 دانشجو بودند. دوره مربوطه به مدت 10 هفته ادامه یافت و د...
15 صفحه اولStability of the nonperturbative bosonic string vacuum
Article history: Received 27 March 2017 Received in revised form 8 May 2017 Accepted 8 May 2017 Available online 10 May 2017 Editor: N. Lambert Quantization of the bosonic string around the classical, perturbative vacuum is not consistent for spacetime dimensions 2 < d < 26. Recently we have showed that at large d there is another socalled mean-field vacuum. Here we extend this mean-field calcu...
متن کاملMagnetic properties of confined bosonic vacuum
The effect of confinement on the bosonic vacuum under the action of an applied magnetic field is computed using Schwinger's formalism for the effective action. The final result reproduces an effective La-grangian similar to the Heisenberg-Euler one in the limit of no confinement and in the case of confinement provides the necessary corrections to this Lagrangian at each order of magnitude of th...
متن کاملMagnetic permeability of constrained scalar QED vacuum
We compute the influence of boundary conditions on the Euler-Heisenberg effective Lagrangian scalar QED scalar for the case of a pure magnetic field. The boundary conditions constrain the quantum scalar field to vanish on two parallel planes separeted by a distance a and the magnetic field is assumed to be constant, uniform and perpendicular to the planes. The effective Lagrangian is obtained u...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Modern Physics Letters A
سال: 2009
ISSN: 0217-7323,1793-6632
DOI: 10.1142/s0217732309028898