how the nonextensivity parameter affects energy fluctuations

نویسندگان

ezat keshavarzi

abbas helmi

mohammad kamalvand

چکیده

in this article, the effect of the nonextensivity parameter on the energy fluctuations of nonextensive systems is studied in two different versions of the tsallis statistical mechanics. once a general expression has been reported for the energy fluctuations in the second version (tsallis work in 1988), the energy fluctuations of an ideal gas and a harmonic oscillator are studied in the second and fourth(olm choice for the mean energy constrain) versions of the tsallis statistical mechanics. the results for the fourth version indicate that relative energy fluctuations are strongly affected by the nonextensivity parameter via the number of accessible states. in fact, in the case of subextensive systems, the nonextensivity parameter leads to fewer accessible states as compared to extensive systems and, therefore, smaller relative energy fluctuations are expected. for super-extensive systems, however, relative energy fluctuations are found to be larger than those in extensive systems because of the greater accessible states available. our studies show that very large relative energy fluctuations are caused as a result of the un-normalized nature of the second version which, in some cases, limits its application.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

How the Nonextensivity Parameter Affects Energy Fluctuations

In this article, the effect of the nonextensivity parameter on the energy fluctuations of nonextensive systems is studied in two different versions of the Tsallis statistical mechanics. Once a general expression has been reported for the energy fluctuations in the second version (Tsallis work in 1988), the energy fluctuations of an ideal gas and a harmonic oscillator are studied in the second a...

متن کامل

Extensivity and nonextensivity of two-parameter entropies

In this paper, we investigate two-parameter entropies and obtain some conditions for their extensivity. By using a generalized (k, r) − product, correlations for subsystems are related to the joint probabilities, so that the entropy remains extensive. email: [email protected] email: [email protected] 1

متن کامل

How Socioeconomic Dispartie Affects Child Mortality in EMRO Countries

Introduction All nations are striving for development. Economic development is one of the main parts of development process, but not all of it. Populations health is one of the main factors of economic development, and child’s mortality is one of the main factors of population health status. The aim of this study is investigating the role of socioeconomic disparties in under 5 mortality in East...

متن کامل

How the Shift Parameter Affects the Behavior of a Family of Meta-Fibonacci Sequences

We explore the effect of different values of the shift parameter s on the behavior of the family of meta-Fibonacci sequences defined by the k-term recursion

متن کامل

Unversal Features of the Order-parameter Fluctuations

We discuss the universal scaling laws of order parameter fluctuations in any system in which the second-order critical behavior can be identified. These scaling laws can be derived rigorously for equilibrium systems when combined with the finitesize scaling analysis. The relation between order parameter, criticality and scaling law of fluctuations has been established and the connexion between ...

متن کامل

Power laws in elementary and heavy - ion collisions - A story of fluctuations and nonextensivity ? -

We review from the point of view of nonextensive statistics the ubiquitous presence in elementary and heavy-ion collisions of power-law distributions. Special emphasis is placed on the conjecture that this is just a reflection of some intrinsic fluctuations existing in the hadronic systems considered. These systems summarily described by a single parameter q playing the role of a nonextensivity...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
physical chemistry research

ناشر: iranian chemical society

ISSN 2322-5521

دوره 2

شماره 2 2014

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023