Quantum Trajectory Theory (QTT)

On Friday the 13th of August 2021, the North York Physics group talk will focus on Quantum Trajectory Theory (QTT) and its possible wide reaching implications for cosmology. Many thanks to Core NYPG Member, David H. for presenting on this topic!

The standard Copenhagen interpretation of quantum mechanics asserts that a quantum jump between energy levels is unpredictable in time and occurs instantaneously. The Copenhagen view separates quantum processes into two realms: 1) a unitary (U) deterministic evolutionary process of the quantum state vector |ψ> punctuated by a 'reduction' (R) process wherein a measurement causes a discontinuous, instantaneous jumping of |ψ> to another state.

Physicist Howard Carmichael and others have developed an extension of quantum theory, called Quantum Trajectory Theory, which goes beyond the Schroedinger equation and its attendant auxiliary measurement process. QTT has recently been experimentally confirmed by researchers at Yale University. To quote their paper from Nature (750 200-204 (2019)): 'The experimental results demonstrate that the evolution of each completed jump is continuous, coherent and deterministic.' They further state that a quantum jump can be intercepted in 'mid flight' and reversed.

Our presentation will cover the Yale group's experimental results as well as exploring QTT and its implications. In addition we will briefly review the quantum weak measurements & quantum tunnelling times achieved by Aephraim Steinberg's group at the University of Toronto.

“If all this damned quantum jumping
were really to stay, I should be sorry I
ever got involved with quantum
theory.”
Erwin Schrödinger
Brit. J. Philos. Sci. III, 109 (1952)2

++++++++++++++++
About Connecting with Zoom:
The Zoom link will be visible on this event’s page only to members who RSVP. That link will take you to the Waiting Room. Come in a little early to get settled in. Plz wait there until the meeting opens at 6:30 pm.
...As a backup, we will send members who RSVPd [UP UNTIL 5:45 pm] and have set up to receive Meetup email notices, the link again.

The attendance limit is 70 with a waitlist..so if you’ve RSVPd and can’t make it after all, it will be appreciated if you can change your RSVP accordingly.

Prior the meeting, new RSVPrs might want to familiarize themselves with Zoom at https://zoom.us/ . We recommend that all have the latest version of Zoom.

If you have a question ahead of time, plz send us a Meetup message.

Stay safe and hope to see you online on Friday, August 13th. And don’t forget the Afterwards. Bring your snacks and drinks to the virtual No Holds Bar - open 9:15 to 11 pm!

+++++++++++++++++
About the North York Physics Group (NYPG)

NYPG has been around for about 14 years with more than 1,500 members.

Our presentations provide a venue for learning from members and guest
academics and scientists. We also have video lectures covering on all
aspects of Physics. We invite you to browse through past events.

We encourage our members to help us find great Physics presenters,
whether they be professional academics, post-grads, or just physics
enthusiasts.

Within our 3 hour +/- meetup, each member gets to learn and discuss many aspects of Physics.

The only "formal" qualifications you need to join is a sincere personal
desire and enthusiasm for Physics; to keep yourself informed and to
courteously share your insights.

Pre-pandemic, after the formal meeting there was the Afterwards..many of us would go a short distance outside to a local pub/restaurant for drinks, snacks, chatting, making new physics oriented friends, or comparing notes with our circle of very scientific friends! For now we hang out at the virtual “No Holds Bar”. Hope you can join us for that! Closing time is 11pm.

Mohsen and I would like to thank the rest of our Organizing Team, Linda, Vera, Avo, Dan and Victor, for their dedicated support of NYPG.

Thank you TEAM!

Betty and Mohsen.