Covariant Notation: Understanding Its Basics and Applications

  • Thread starter Thread starter help1please
  • Start date Start date
  • Tags Tags
    Covariant Notation
help1please
Messages
167
Reaction score
0
I posted this question in homeworks section but no one can help, or seems unable to answer my question. I am hoping if I post it here, someone might be able to clear it up for me:


https://www.physicsforums.com/showthread.php?t=621238


Thanks in advance.
 
Physics news on Phys.org
Answered in original homework thread.
 

Thread 'Schrödinger equation and classical wave equation'

Not an expert in QM. AFAIK, Schrödinger's equation is quite different from the classical wave equation. The former is an equation for the dynamics of the state of a (quantum?) system, the latter is an equation for the dynamics of a (classical) degree of freedom. As a matter of fact, Schrödinger's equation is first order in time derivatives, while the classical wave equation is second order. But, AFAIK, Schrödinger's equation is a wave equation; only its interpretation makes it non-classical...
View full post »

Thread 'Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect'

Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
View full post »

Thread 'Is Maxwell's electromagnetism an effective (field) theory?'

Is it possible, and fruitful, to use certain conceptual and technical tools from effective field theory (coarse-graining/integrating-out, power-counting, matching, RG) to think about the relationship between the fundamental (quantum) and the emergent (classical), both to account for the quasi-autonomy of the classical level and to quantify residual quantum corrections? By “emergent,” I mean the following: after integrating out fast/irrelevant quantum degrees of freedom (high-energy modes...
View full post »

Similar threads

Please help me understand a definition of a covariance function
Replies
2
Views
814
I Seeking an intuition linking definitions of contravariant and covariant
Replies
1
Views
2K
I Notation of the approximation in quantum phase estimation algorithm
Replies
1
Views
1K
I Matrix Notation for potential in Schrodinger Equation
Replies
6
Views
1K
I Why do ##t## and ##-i\hbar\partial_t## not satisfy the definition of a linear map/operator in Hilbert space?
Replies
4
Views
2K
B More convenient mathematical notation for a simple use case
Replies
6
Views
2K
I Commutation between covariant derivative and metric
Replies
16
Views
3K
A Berry phase and parallel transport
Replies
22
Views
5K
I Purpose of Tensors, Indices in Tensor Calculus Explained
Replies
10
Views
3K
I'm having some trouble understanding bra-ket notation?
Replies
1
Views
988

Hot Threads

Recent Insights

Back
Top