IPM Calendar 
Sunday 20 April 2025   Today  
Events for day: Wednesday 23 April 2025    
           09:00 - 16:00     Hybrid Workshop
Light-Matter Interaction & Quantum Coherence Effects

School
QUANTUM PHYSICS AND MATTER

This workshop will delve into the fundamental principles and recent progress in light-matter interactions, with a special emphasis on quantum coherence and interference. These concepts are essential for understanding quantum optical phenomena, which have far-reaching implications for quantum computing, precision metrology, and advanced photonic technologies. Participants will explore computational and numerical approaches to studying light-matter interactions, gaining insights into theoretical frameworks and practical implementations. A key focus will be on the ways in which coherent optical effects can be precisely controlled through the mod ...

           14:00 - 15:00     Combinatorics and Computing Weekly Seminar
Legendre Pairs

School
MATHEMATICS

‎Let A=[a_₀, a_₁, ..., a_{n-1}] ∈ ℂ^ℓ be a finite complex sequence of length ℓ periodically continued with period ℓ. ‎The periodic autocorrelation function PAF(A,s) of A at lag s is‎ PAF(A, s) =∑ {j=0}^{ℓ-1} a_joverline{a_{j+s}}, s=0,1, ..., ℓ-1. ‎Two sequences‎ ‎A and B of the same length ℓ. ‎form a Legendre pair (A,B) if‎ ‎PAF(A,s)+PAF(B,s)=-2, s=1,2, ?, ⌊n/2⌋. ‎Binary Legendre pairs of length ℓ are pertinent to the construction of Hadamard matrices of order ℓ +2 which can exist only ...

           16:00 - 17:00     Mathematics Colloquium
Ontology in Mathematics

School
MATHEMATICS

This lecture is intended as an introduction to some of the metaphysical and epistemological issues that are usually raised in connection with mathematical thought. These issues include, among other things, the nature of abstract objects like numbers and sets, some of the well-known arguments for the existence of such objects as well as the epistemological problems that the existence of those objects incur. There will also be some brief discussions of certain anti-realist approaches to mathematical ontology.

Subscribing the Mathematics Colloquium mailing list:
https://groups.google.com/g/ipm-math-colloquium
< ...

           17:00 - 18:00     Wednesday Weekly Seminar - Virtual Format
Axions in the Dark Dimension

School
PARTICLES AND ACCELERATORS

Abstract:

The dark dimension scenario, which is motivated from Swampland principles and predicts a single micron scale extra dimension, suggests a consistent framework for the dark sector of the universe. We consider the implications of this scenario for the QCD axion. We find that in the scenario in which the axion is localized on the standard model brane (which we argue is natural), a combination of theoretical (being bounded by the 5D Planck mass) and observational constraints forces it to have decay constant in a narrow range f~10^9 ?10^10 GeV.

Indico Link:
https://indico.hep.ipm.ir/e/n.gendler ...