Theory of BEC-BCS Crossover and Superfluidity

BEC-BCS Crossover란? 물질의 세계는 매우 다양한 상태로 존재할 수 있다. 그중에서도 극저온 상태에서는 물질이 특별한 성질을 나타내기 시작한다. BEC-BCS Crossover는 이런 극저온 상태에서 물질이 보이는 특이한 현상 중 하나다. 이를 이해하려면 먼저 BEC와 BCS가 무엇인지 알아보자. BEC는 Bose-Einstein Condensate의 약자로, 보스 입자들이 아주 낮은 온도에서 동일한 양자 상태에 몰리는 현상을 의미한다. 반면, BCS는 Bardeen-Cooper-Schrieffer 이론의 … Read more

Calculation of Hadron Mass Spectrum in Lattice QCD

Understanding Lattice QCD Quantum Chromodynamics (QCD) is a theory that describes the strong force—the fundamental force that holds atomic nuclei together. It’s like an invisible glue that ensures protons and neutrons, which are made of even smaller particles called quarks, stick together within the nucleus of an atom. However, understanding QCD is not a walk … Read more

Spontaneous Symmetry Breaking via Higgs Mechanism

Discovering Symmetry In the vast realm of physics, symmetry is a key concept that helps scientists understand the fundamental workings of the universe. Imagine looking in a mirror. What you see is a reflection, an image that looks just like you but in reverse. This reflection represents a kind of symmetry. In physics, symmetry refers … Read more

Anomalies and Instanton Effects in Quantum Chromodynamics

Understanding Quantum Chromodynamics Quantum Chromodynamics, or QCD for short, is a fundamental theory in physics that explains how quarks and gluons—the building blocks of protons and neutrons—interact with each other. Imagine these particles as tiny colorful marbles. Quarks come in six different “flavors,” like different types of candies, and they are held together by gluons, … Read more

Formulation of Quantum Field Theory on Riemannian Manifolds

Introduction to Quantum Field Theory Quantum Field Theory (QFT) is like the language of the universe. Imagine it as a grand symphony where every particle plays a note, and together they create the music of existence. At its core, QFT is a framework that combines classical field theory, special relativity, and quantum mechanics. It’s used … Read more

Quantum Information Theoretic Interpretation of AdS CFT Correspondence

Understanding AdS/CFT The AdS/CFT correspondence is a fascinating concept in theoretical physics that connects two seemingly different worlds: quantum mechanics and gravity. Imagine a world where every object and event can be projected as a hologram. This is somewhat similar to how AdS/CFT works. The “AdS” stands for Anti-de Sitter space, which is a type … Read more

Fermionic Vibrational Modes in Superstring Theory

Understanding Superstring Theory Superstring theory might sound like a topic straight out of a science fiction novel, but it’s a real scientific theory that attempts to explain the fundamental nature of our universe. At its core, superstring theory suggests that the most basic building blocks of the universe are not point-like particles but tiny, vibrating … Read more

Brane World Scenario and Randall-Sundrum Model

Understanding the Universe The universe is a vast and mysterious place, filled with countless stars, galaxies, and other celestial bodies. Scientists have long sought to understand its nature and the fundamental forces that govern it. In this quest, a fascinating concept known as the “Brane World Scenario” has emerged, offering intriguing possibilities about the structure … Read more

Numerical Analysis Methods for Gravitational Wave Emission

Understanding Gravitational Waves Gravitational waves are ripples in the fabric of space-time, much like the ripples seen on a pond’s surface when a stone is thrown in. They were first predicted by Albert Einstein in 1916 as a part of his theory of General Relativity. Just as the stone disturbs the water, massive celestial events, … Read more