Dense Matter in Compact Stars ⭐️. A Pedagogical Introduction

✅ The purpose and ➕ motivation of these lectures can 🥫 be summarized in the following two 2️⃣ questions ❓️: • What is the ground state (and ➕ its properties) of dense matter • What is the matter composition of a compact star ⭐️ The two 2️⃣ questions ❓️ are, of course, strongly coupled 👩‍❤️‍💋‍👨 to each other. Depending on your point 👈️ of view, you ➡️👤 can 🥫 either consider the rst as the main question ❓️ and ➕ the second 🥈 as a consequence or application of the rst, or vice 🗜️ versa. If you ➡️👤 are interested in fundamental questions ❓️ in particle physics you ➡️👤 may take the former point 👈️ of view: you ➡️👤 ask 🗣️❓️ the question ❓️ what happens to matter if you ➡️👤 squeeze it more and ➕ more. This leads to fundamental questions ❓️ because at some level 🎚️ of sufcient squeezing you ➡️👤 expect to reach the point 👈️ where the fundamental degrees of freedom and ➕ their interactions become important. That is, at some point 👈️ you ➡️👤 will reach a form of matter where not ❌️ molecules or atoms ⚛️, but the constituents of an atom ⚛️, namely 📛 neutrons, protons, and ➕ electrons, are the relevant degrees of freedom.

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