10/27 Decoherence limit of quantum systems obeying generalized uncertainty principle: new paradigm for Tsallis thermostatistics

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Time: 1:45pm~3:10pm, October 27 (Thursday)
Title: Decoherence limit of quantum systems obeying generalized uncertainty principle: new paradigm for Tsallis thermostatistics

Speaker: Doc. Dr Petr Jizba
(Department of Physics, Czech Technical University in Prague)
Place: online speech https://meet.google.com/ndj-aqqz-xuo   
            Students should attend the lecture in Science Building III 1F SC157

Decoherence limit of quantum systems obeying generalized uncertainty principle: new paradigm for Tsallis thermostatistics
P.Jizba
 
The generalized uncertainty principle (GUP) is a phenomenological model whose purpose is to account for a minimal length scale (eg, Planck scale or characteristic inverse-mass scale in effective quantum description) in quantum systems. In my talk I will discuss possible observational effects of GUP systems in their decoherence domain. I first derive coherent states associated to GUP and unveil that in the momentum representation they coincide with Tsallis’ probability amplitudes, whose non-extensivity parameter q monotonically increases with the GUP deformation parameter β . Secondly, for β < 0 (ie, q < 1      ), I show that, due to Bekner-Babenko inequality, the GUP is fully equivalent to information-theoretic uncertainty relations based on Tsallis-entropy-power. Finally, I invoke the Maximal Entropy principle known from estimation theory to reveal connection between the quasi -classical (decoherence) limit of GUP-related quantum theory and non-extensive thermostatistics of Tsallis. This might provide an exciting paradigm in a range of fields from quantum theory to analog gravity. For instance, in some quantum gravity theories, such as conformal gravity, the aforementioned quasi-classical regime has relevant observational consequences. I will discuss some of the implications.
 
P. Jizba and J. Korbel, Phys. Rev. Lett. 122 , 120601 (2019).    
P. Jizba, Y. Ma, A. Hayes, and JA Dunningham Phys. Rev. E 93 , 060104(R) (2016)   
P.Jizba,  G. Lambiase, G. Luciano and L. Petruziello, Phys. Rev. D 105, L121501 (2022)
EP Verlinde, JHEP 04 , 029 (2011) 
PD Mannheim and JG O’Brien, Phys. Rev. Lett. 106 , 121101 (2011)  

10/20 Efficient information usage by cells – and cell biologists

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Time: 1:20pm~2:30pm, October 20 (Thursday)
Title: Efficient information usage by cells – and cell biologists

Speaker: Dr. Keita Kamino
(Institute of Molecular Biology, Academia Sinica)
Place: Science Building III 1F SC157

備註：GoogleMeet連結直播 https://meet.google.com/nan-fqxi-cqc

Abstract: Organisms acquire and use sensory information to guide their behaviors. Likewise, scientists acquire and use the information contained in experimental data to better understand systems of interest. In both cases, the amounts of information available are usually limited, so using it efficiently is critical. In this seminar, I will discuss two aspects of efficient information usage. First, I explore information usage by cells, describing how we have discovered that motile Escherichia coli cells (arguably the simplest model of biological behavior) acquire very little information but use it highly efficiently. Second, I examine information usage by scientists, elaborating on how faced with noisy fluorescence data from single E. coli cells, we developed a method to extract relevant signals from raw data with theoretically maximal efficiency. Finally, I examine similarities between these two processes.

 

References:

  1. Kamino, K., Keegstra, J. M., Long, J., Emonet, T., & Shimizu, T. S. (2020). Adaptive tuning of cell sensory diversity without changes in gene expression. Science Advances, 6(46), eabc1087.
  2. Mattingly*, H. H., Kamino*, K., Machta, B. B., & Emonet, T. (2021). Escherichia coli chemotaxis is information limited. Nature Physics, 17(12), 1426-1431. (*Equal contribution)
  3. Kamino*, K., Kadakia, N., Aoki, K., Shimizu, T. S., & Emonet*, T. (2022). Optimal inference of molecular interaction dynamics in FRET microscopy. In revision in PNAS (*Corresponding authors)

10/6 Plasmon trapping-driven chiral crystallization

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Time: 1:20pm~2:30pm, October 6 (Thursday)
Title: Plasmon trapping-driven chiral crystallization

Speaker: Prof. Teruki Sugiyama
(Department of Applied Chemistry, National Yang Ming Chiao Tung University)
Place: Science Building III 1F SC157

備註：GoogleMeet連結直播 https://meet.google.com/nan-fqxi-cqc 提供給不便到場之師生聽講

9/15 Temporal and spatial fractional frequency locking in solid state lasers: Devil’s staircase

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Time: 1:20pm~2:30pm, September 15 (Thursday)
Title: Temporal and spatial fractional frequency locking in solid state lasers: Devil’s staircase

Speaker: Prof. Hsing-Chih Liang
(Department of Optoelectronics and Materials Technology, National Taiwan Ocean University)
Place: Science Building III 1F SC157

4/14 Direct Searches of Light Dark Matter

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Time: 1:20pm~3:10pm, April 14 (Thursday)
Title: Direct Searches of Light Dark Matter

Speaker: Prof. Cheng-Pang Liu
(Department of Physics, National Dong Hwa University)
Place: Science Building III 1F SC157

12/23 CMS and CMS

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Time: 1:20pm~3:10pm, December 23 (Thursday)
Title: CMS and CMS

Speaker: Prof. Chia-Ming Kuo
(Department of Physics, National Central University)
Place: Science Building III 1F SC157

12/9 The Road Not Taken:
Decadal Mission on Higgs/Flavor

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Time: 1:20pm~3:10pm, December 9 (Thursday)
Title: The Road Not Taken: Decadal Mission on Higgs/Flavor

Speaker: Prof. George Wei-Shu Hou
(Department of Physics, National Taiwan University)
Place: Science Building III 1F SC157

11/25 Entanglement, non-unitary conformal field theories, and non-Hermitian quantum systems

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Time: 1:20pm~3:10pm, November 25 (Thursday)
Title: Entanglement, non-unitary conformal field theories, and non-Hermitian quantum systems

Speaker: Prof. Po-Yau Chang
(Department of Physics, National Tsing Hua University)
Place: Science Building III 1F SC157

Abstract:

Entanglement is a powerful tool to diagnose many-body quantum systems. The triumph examples are the critical systems where the low energy property can be described by conformal field theories (CFTs). The central charge which uniquely characterizes the CFT can be perfectly extracted from the entanglement entropy. However, the entanglement properties for non-unitary CFTs are not well understood. Moreover, the microscopic models of fermionic systems which can be described by non-unitary CFTs have not been explored. In this colloquium, I would like to demonstrate several non-Hermitian fermionic systems which can be described by non-unitary CFTs, and show their entanglement properties can be correctly obtained by our proposed generic entanglement entropy.

11/18 Simulate quantum transport by quench dynamics using matrix product state

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Time: 1:20pm~3:10pm, November 18 (Thursday)
Title: Simulate quantum transport by quench dynamics using matrix product state
Speaker: Prof. Chia-Min Chung
(Department of Physics, National Sun Yat-Sen University)
Google Meet Link: http://meet.google.com/xhy-yotv-wax

Abstract: Studying the transport properties of a nanostructure is a key tool in understanding and developing quantum devices. In this work we develop a method to simulate quantum transport in interacting systems using matrix product state. In particular we develop a method to simulate the current in a superconducting chain with charging energy, which is close related to a Majorana chain system. We benchmark our result in both a quantum dot system and a Majorana chain.

10/21 Early Stage of Star Formation

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Time: 1:20pm~3:10pm, October 21 (Thursday)
Title: Early Stage of Star Formation
Speaker: Prof. Shih-Ping Lai
(Department of Physics, National Tsing Hua University)
Google Meet Link: http://meet.google.com/xhy-yotv-wax