Recent content by wasi-uz-zaman

i am new in QFT , wants to write lagrangain density - how should i proceed , do i strat from Dirac equation and its adjoint - if so than i have seen derivation of Dirac equation from the Dirac lagrangian density-here confusion lies- so my point is seeing symmetries alone how can we model...

hi, i have seen lagrangian density for spin 0 , spin 1/2, spin 1 , but i am not getting from where these langrangian densities comes in at a first place. kindly give me the hint. thanks

hi, i have studied Standard Model for particle physics - at present it is described by three groups - i have studied - these groups but could not establish what particular feature suggest of these group to be used to describe SM. Thanks

hi, i am going through differential equations which are nonlinear and singular - like Lane-Emden equation etc. my question is how to tackle singularity - while coding. regards

hi, i am working on nonlinear differential equation- i know rules which decide the equation to be nonlinear - but i want an answer by which i can satisfy a lay man that why the word nonlinear is used. it is easy to explain nonlinearity in case of simple equation i.e when output is not...

hi, can anyone please give me the list of measurement we can do ON Feynman diagram? Like , branching ratio, cross-section etc

hi, i am working on Evolutionary computing, i have solved non-linear singular differential equation through genetic algorithm, but now i am interested to solve it through other techniques of EC as well, like genetic programming , evolutionary strategies, evolutioanry programming etc regards wasi

hi, i am going to solve Troesch's equation u′′(x) = λ sinh(λu(x)) by numerical technique, but i couldn't find the derivation of it- kindly anyone knows its derivation or details of variable used. regards wasi

I understand overall decrease in potential energy of Lighter nuclei releases energy on Fusion- but for heavier nuclei - energy is required- means overall potential energy is not decreased - than how these heavier nuclei sustained their stability.

Thanks a lot , it indeed clear my query to a great extent.

HI, I have a question can Lane-Emden equation be use in SSM( standard stellar model) and overall for the study of stellar structure in todays latest research. thanks

HELLO, i have started working on Genetic Algorithm , i have studied evloution of fitness function, but i really could not get it. please help me in this regard wasi

hi, i want to figure out why it is named as fixed point iteration.

i am doing research to make criteria by which i can identify easily linear and non-linear and also identify its singular or not by doing simple test.please help me in this regard.

thanks that helps , actually i am figuring out why EM waves cannot pass through metal interface. wasi