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Given the Hamiltonian:$$%H = omega left(|0rangle langle1| + |1rangle langle0| right) = begin{bmatrix}0 & omega omega & 0end{bmatrix}$$, I want to find the...
Asked on 02/03/2021 by Oti Dioti
2 answerI was just reading a question about the gravity inside a hollow neutron star. It was a trivial question, obviously there is no force felt. But then it got...
Asked on 02/03/2021
2 answerIn my school experiment, I wanted to measure the gravitational constant ($9.81 m/s^2$) by using a pendulum. If we take into account the damped oscillation (i.e. friction forces),...
Asked on 02/03/2021 by curious
2 answerI was wondering how we define IR-fixed point, when we have more then one coupling. When the coupling is unique, it is simple, because we can look at the beta...
Asked on 02/03/2021
2 answerI've noticed that for many solids, specific heat is around 1 Kj/Kg*K is there a theoretical explanation for this? What common solids have the highest heat capacity per mass...
Asked on 02/03/2021
4 answerWhat is the physical meaning behind $langle hat{a} rangle$ (where $hat{a}$ is the annhilation operator)? I was thinking that it represents $sqrt{n}$ (where $n$ is the...
Asked on 02/03/2021 by Nice1m80
2 answerHere is an extract from my textbook-Most of the phenomena occurring around us can be described under electromagnetism. Virtually every force that we can think of like friction, chemical force...
Asked on 02/03/2021 by Manan Arora
1 answerLet's take a spacetime as a pair $(M,g)$ where $M$ is the manifold and $g$ the metric.I've seen that there exist a generalization of manifolds. This...
Asked on 02/03/2021 by miguelification
1 answerWhen incident light hits an interface of a dielectric surface at the Brewster angle, I understand that it will result in the generation of a perfectly polarized(horizontally) reflective ray and...
Asked on 02/03/2021
1 answerI am learning realitivity in college and in our class our lecturer explained four-momentum. When I was reading a book in QFT.it writes the momentum as $p^{mu} =...
Asked on 02/03/2021 by max_fisics
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