Based on the non-perturbative kinetic theory of the electron-hole pair excitation (EHE) in graphene under influence of a variable electromagnetic field, we investigate some features of the nonmonotonic evolution of entropy in the framework of the low-energy approach for different configurations of the linear and circular polarization laser fields. Such a character of the entropy change in graphene is stipulated by the action of the external field and the difference in the in− and out− states of the system, which is characteristic for field-induced phase transitions. A similar effect is known in the theory of the vacuum creation of an electron-positron plasma (EPP) under the action of a strong electromagnetic field, but has its own features.
The paper justifies 𝐸2-similarity of kinetic equation solutions to describe vacuum emergence of electronpositron plasma under the effect of strong “laser” fields, where 𝐸(𝑡) is the intensity of the strong time-dependent “laser” field. The boundaries of existence of this similarity were studied.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.