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Presentation
L’IRSAMC (The Institute of Research on Complex Atomic and Molecular Systems) is a federation of four laboratories (LCAR, LCPQ, LPCNO, LPT), in physics and fundamental chemistry whose research activities are supported both by the Université Paul Sabatier, the CNRS and INSA
Publications of 4 research laboratories
- Hal-LCAR. - Laboratory Collisions Clusters Reactivity, from 1990 until todays
- Hal-LCPQ. - Quantum Chemistry and Physics Laboratory, from 2007 until todays
- Hal-LPCNO. - Physics and Chemistry of Nano Objects Laboratory, from 2006 until todays
- Hal-LPT.- Theoretical Physics Laboratory, from 2003 until todays
Main advantages and functioning of Hal
Main advantages
- Long-term archiving, sustainability of the deposits
- Better visibility of the scientific productivity
- Open access, accessible everywhere
- Possibility of establishing lists of publications
Functioning
- The deposit of a document requires the agreement of its authors, and it must respect editor policy.
- If no agreement has been spent, deposit only the bibliographical note
- Beware ! Once a document is put online, it cannot be withdrawn. New versions may be added.
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To deposit a document
- Submit a new document
- If you submit for the first time Register
- Thesis must be deposited there: TEL (online thesis)
- Documentation Hal
- contact : documentation@irsamc.ups-tlse.fr
Last submission
[hal-02536330] Microscopic theory of the friction force exerted on a quantum impurity in one-dimensional quantum liquids (09/04/2020)
Moins
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[hal-02535447] Finite-time adiabatic processes: Derivation and speed limit (08/04/2020)
Plus
Obtaining adiabatic processes that connect equilibrium states in a given time represents a challenge for mesoscopic systems. In this paper, we explicitly show how to build these finite-time adiabatic processes for an overdamped Brownian particle in an arbitrary potential, a system that is relevant both at the conceptual and the practical level. This is achieved by jointly engineering the time evolutions of the binding potential and the fluid temperature. Moreover, we prove that the second principle imposes a speed limit for such adiabatic transformations: there appears a minimum time to connect the initial and final states. This minimum time can be explicitly calculated for a general compression/decompression situation.
[hal-02534927] Chaos-assisted tunneling resonances in a synthetic Floquet superlattice (08/04/2020)
Plus
The field of quantum simulation, which aims at using a tunable quantum system to simulate another, has been developing fast in the past years as an alternative to the all-purpose quantum computer. In particular, the use of temporal driving has attracted a huge interest recently as it was shown that certain fast drivings can create new topological effects, while a strong driving leads to e.g. Anderson localization physics. In this work, we focus on the intermediate regime to observe a quantum chaos transport mechanism called chaos-assisted tunneling which provides new possibilities of control for quantum simulation. Indeed, this regime generates a rich classical phase space where stable trajectories form islands surrounded by a large sea of unstable chaotic orbits. This mimics an effective superlattice for the quantum states localized in the regular islands, with new controllable tunneling properties. Besides the standard textbook tunneling through a potential barrier, chaos-assisted tunneling corresponds to a much richer tunneling process where the coupling between quantum states located in neighboring regular islands is mediated by other states spread over the chaotic sea. This process induces sharp resonances where the tunneling rate varies by orders of magnitude over a short range of parameters. We experimentally demonstrate and characterize these resonances for the first time in a quantum system. This opens the way to new kinds of quantum simulations with long-range transport and new types of control of quantum systems through complexity.
[hal-02534418] Electronic Excited States and UV–Vis Absorption Spectra of the Dihydropyrene/Cyclophanediene Photochromic Couple: a Theoretical Investigation (08/04/2020)
Plus
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[hal-02534402] Recent progress in ligand photorelease reaction mechanisms: Theoretical insights focusing on Ru(II) 3MC states (08/04/2020)
Plus
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