29 FEB 2024
09:00 - 14:30

Date: 10-11 Esfand 1402 (Thursday-Friday)
Time: 9:00- 16:30
Deadline for registration: 1 Esfand 1402

Link: https://physics.ipm.ac.ir/conferences/iwhep/index.jsp

1 MAR 2024
09:00 - 14:30

Date: 10-11 Esfand 1402 (Thursday-Friday)
Time: 9:00- 16:30
Deadline for registration: 1 Esfand 1402

Link: https://physics.ipm.ac.ir/conferences/iwhep/index.jsp

2 MAR 2024
14:00 - 15:00

Abstract:



Near-term quantum simulators suffer from various imperfections. A key question is whether such noisy quantum devices can outperform classical computers. Several demonstrations for quantum advantage have been achieved for sampling problems in superconducting and optical platforms. While these proof of principle experiments show the superiority of quantum computers, they do not offer an immediate practical advantage due to the limited practicality of sampling problems. Variational quantum algorithms are the most promising approach for achieving practical quantum advantage. These algorithms benefit from a hybrid combination of quantum devices and classical optimizers. In this seminar, we show two distinct applications for such algorithms, namely: (i) quantum simulation of many-body systems; and (ii) machine learning problems. In the former, we show how symmetries can be harnessed in optimizing circuit design [1] and be implemented experimentally in superconducting quantum simulators [2]. For the latter, a novel error-mitigation algorithm is presented which significantly enhances the performance of variational quantum algorithms for supervised machine learning problems [3].



References:

[1] Symmetry enhanced variational quantum eigensolver C. Lyu, X. Xu, M.-H. Yung, A. Bayat, Quantum 7, 899 (2023)

[2] Multi-Level Variational Spectroscopy using a Programmable Quantum Simulator Z. Han, et. al., Phys. Rev. Research 6, 013015 (2024)

[3] Ensemble-learning variational shallow-circuit quantum classifiers Q. Li, Y. Huang, X. Hou, Y. Li, X. Wang, A. Bayat, Phys. Rev. Research 6, 013027 (2024)





Date and time: 12 Esfand, 1402 at 2 pm



Format: Online

Link: https://www.skyroom.online/ch/schoolofphysics/quantuminfo

3 MAR 2024
15:00 - 16:00

Abstract:

In this talk, I will briefly review the quantum phase transitions in 3D Dirac systems upon switching either attractive or repulsive interactions on. Then, I will discuss some condensed matter systems where these phenomena might be experimentally visualized. Finally, I will present the results of our quantum Monte Carlo simulations for single Dirac fermion systems which can guide some ongoing efforts on conformal bootstrap approach in 3D.

Meeting Place:
Seminar Room, School of Particles and Accelerators, IPM

Link to Join Virtually:
https://meet.google.com/fnv-dfkk-ghb

Link: https://meet.google.com/fnv-dfkk-ghb

4 MAR 2024
11:00 - 12:00

Abstract:

The Future Circular Collider (FCC), is potentially the future new CERN's flagship for high-energy physics. Just like the LHC, the tunnel will initially house a resistive lepton machine called FCC-ee, which will thoroughly study the Z, W, and Higgs bosons. Later on, it will be replaced by a superconducting hadron machine that will explore energy levels of up to 100 TeV center-of-mass.
The FCC-ee, with its 90 km circumference, presents several challenges in terms of magnet design. For instance, we need to produce a large number of highly precise magnets at reasonable costs. These magnets must operate in magnetic fields varying from one Tesla to a few milli-Tesla. Additionally, we must optimize the lifetime costs to balance the initial investment with the operational expenses, considering the limited lifetime of the machine. The design also aims to have a compact cross-section to allow the booster and collider magnets to be integrated within the same tunnel.
During this webinar, I will provide an overview of the different designs for the collider magnets. I will also present the progress and prospects of our magnet development work, which is essential for the project's feasibility study.

Meeting Place:
Seminar Room, School of Particles and Accelerators, IPM

Link to Join Virtually:
https://meet.google.com/fnv-dfkk-ghb


Link: https://meet.google.com/fnv-dfkk-ghb

6 MAR 2024
11:00 - 12:00

Abstract:


The study of particle structure is one of the most fundamental and challenging scientific topics that has always maintained its attractiveness among researchers. They have pursued this goal with the development of different tools and methods. One of these methods is by finding particle cross sections, which is accompanied by many complexities. Fortunately, the factorization theorem has made this path easier by providing a solution. In this theory, using collinear and k_t-factorization frameworks we can find the cross section of particle collisions. The k_t-factorization theorem is actually an extension of the collinear factorization theorem, which considers the transverse momentum of a parton in addition to its collinear component. Recently, another approach by extending the k_t-factorization framework is proposed, which is called the (z, k_t)-factorization. In this framework the kinematics of the last step emitted parton in contrast to the k_t-factorization theorem is completely considered, and this parton plays an important role in cross section calculations. In this talk, we investigate the (z, k_t)-factorization framework by considering various hadronic differential cross sections, and also double unintegrated parton distribution functions of different approaches.

Indico Link
https://indico.hep.ipm.ir/e/s.rezaie

Meeting Place:
Seminar Room, School of Particles and Accelerators, IPM

Link to join virtually:
https://meet.google.com/fnv-dfkk-ghb

Link: https://meet.google.com/fnv-dfkk-ghb