Microscopic Origin of the Logarithmic Time Evolution of Aging Processes in Complex Systems
(2013) In Physical Review Letters 110(20).- Abstract
- There exists compelling experimental evidence in numerous systems for logarithmically slow time evolution, yet its full theoretical understanding remains elusive. We here introduce and study a generic transition process in complex systems, based on nonrenewal, aging waiting times. Each state n of the system follows a local clock initiated at t = 0. The random time tau between clock ticks follows the waiting time density psi (tau). Transitions between states occur only at local clock ticks and are hence triggered by the local forward waiting time, rather than by psi (tau). For power-law forms psi (tau) similar or equal to tau(-1-alpha) (0 < alpha < 1) we obtain a logarithmic time evolution of the state number < n(t)> similar or... (More)
- There exists compelling experimental evidence in numerous systems for logarithmically slow time evolution, yet its full theoretical understanding remains elusive. We here introduce and study a generic transition process in complex systems, based on nonrenewal, aging waiting times. Each state n of the system follows a local clock initiated at t = 0. The random time tau between clock ticks follows the waiting time density psi (tau). Transitions between states occur only at local clock ticks and are hence triggered by the local forward waiting time, rather than by psi (tau). For power-law forms psi (tau) similar or equal to tau(-1-alpha) (0 < alpha < 1) we obtain a logarithmic time evolution of the state number < n(t)> similar or equal to log(t/t(0)), while for alpha > 2 the process becomes normal in the sense that < n(t)> similar or equal to t. In the intermediate range 1 < alpha < 2 we find the power-law growth < n(t)> similar or equal to t(alpha-1). Our model provides a universal description for transition dynamics between aging and nonaging states. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3932540
- author
- Lomholt, Michael A. ; Lizana, Ludvig ; Metzler, Ralf and Ambjörnsson, Tobias LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 110
- issue
- 20
- article number
- 208301
- publisher
- American Physical Society
- external identifiers
-
- wos:000319064100017
- scopus:84877801278
- pmid:25167457
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.110.208301
- language
- English
- LU publication?
- yes
- id
- 2f0054a2-b3e8-49cc-bcc6-ac038b904d5f (old id 3932540)
- date added to LUP
- 2016-04-01 10:56:19
- date last changed
- 2024-04-22 00:13:50
@article{2f0054a2-b3e8-49cc-bcc6-ac038b904d5f, abstract = {{There exists compelling experimental evidence in numerous systems for logarithmically slow time evolution, yet its full theoretical understanding remains elusive. We here introduce and study a generic transition process in complex systems, based on nonrenewal, aging waiting times. Each state n of the system follows a local clock initiated at t = 0. The random time tau between clock ticks follows the waiting time density psi (tau). Transitions between states occur only at local clock ticks and are hence triggered by the local forward waiting time, rather than by psi (tau). For power-law forms psi (tau) similar or equal to tau(-1-alpha) (0 < alpha < 1) we obtain a logarithmic time evolution of the state number < n(t)> similar or equal to log(t/t(0)), while for alpha > 2 the process becomes normal in the sense that < n(t)> similar or equal to t. In the intermediate range 1 < alpha < 2 we find the power-law growth < n(t)> similar or equal to t(alpha-1). Our model provides a universal description for transition dynamics between aging and nonaging states.}}, author = {{Lomholt, Michael A. and Lizana, Ludvig and Metzler, Ralf and Ambjörnsson, Tobias}}, issn = {{1079-7114}}, language = {{eng}}, number = {{20}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{Microscopic Origin of the Logarithmic Time Evolution of Aging Processes in Complex Systems}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.110.208301}}, doi = {{10.1103/PhysRevLett.110.208301}}, volume = {{110}}, year = {{2013}}, }