Canonical transformation Definition and 56 Threads

  1. L

    How Does a Canonical Transformation Relate to Hamilton's Equations of Motion?

    Homework Statement Consider a canonical transformation with generating function F_2 (q,P) = qP + \epsilon G_2 (q,P), where \epsilon is a small parameter. Write down the explicit form of the transformation. Neglecting terms of order \epsilon^2 and higher,find a relation between this...
  2. G

    Classical Mechanics: Canonical transformation problem

    Homework Statement Show directly that the transformation; Q=log(1/q*sinp), P=q*cotp is canonical.Homework Equations Since these equations have no time dependence, the equations are canonical if (with d denoting a partial derivative) dQ_i/dq_j = dp_j/dP_i, and dQ_i/dp_j = -dq_j/dP_i The...
  3. E

    How can I determine the canonical transformation for this problem?

    Hi, I tried to solve this problem, but I was unsuccessful Here is the problem: Given the transformation: \left \{ \begin{array}{l} Q = p^\gamma \cos(\beta q) \\ P = p^\alpha \sin(\beta q) \end{array} \right. a) Determine the values of the constants \alpha , \beta and \gamma...
  4. C

    What is the Correct Angle for Canonical Transformation?

    Hello, I need to solve the Hamiltonian of a one-dimensional system: H(p, q) = p^2 + 3pq + q^2 And I've been instructed to do so using a canonical transformation of the form: p = P \cos{\theta} + Q \sin{\theta} q = -P \sin{\theta} + Q \cos{\theta} And choosing the correct angle so...
  5. L

    Is Any Dynamical Variable's Infinitesimal Transformation Canonical?

    Problem: Verify that the infinitesimal transformation generated by any dynamical variable g is a canonical transformation. I've worked out that an infinitesimal canonical transformation can be represented as follows: q_i -> q_i' = q_i + ε(∂g/∂p_i) ≡q_i + δq_i...
  6. E

    Canonical Transformation and renormalization

    Canonical Transformation and renormalization... Let be L a lagrangian of a Non-Renormalizable theory..then we could take its hamiltonian. Then after taking Hamiltonian you could take a Canonical Transformation to find another (renormalizable) Hamiltonian..and solve it..¿why this trick is...
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