# Events

### 65,000 years - the rich history of Aboriginal Astronomy

10 July 2019 7:00pm–8:30pm

Join the Astronomical Society of Australia for the annual Harley Wood Public Lecture titled ‘65,000 years - the rich history of Aboriginal Astronomy’, presented by Kirsten Banks.

### The q-deformed Haldane--Shastry spin chain: from the affine Hecke algebra, via 'freezing', to exact eigenvectors

17 May 2019 11:00am–12:00pm

Dr Jules Lamers (The University of Melbourne)

### Random Stuff - an ACEMS Public Lecture at UQ

14 May 2019 6:00pm–8:00pm

Professor Dirk Kroese - Public Lecture

### Oscillations of the Prime Number Theorem Error Term

14 May 2019 3:00pm–4:00pm

A commonly known version of the prime number theorem is that the prime number counting function pi(x) grows like x/log(x). An equivalent statement is that the Chebyshev Psi function Psi(x) grows like x. It goes back to Littlewood that the error term Psi(x) - x changes sign infinitely many times. We refine a method of Kaczorowski to give a lower bound on the number of sign changes in Psi(x) - x.

### Special Colloquium celebrating Women in Mathematics

13 May 2019 2:00pm–3:00pm

Romina Arroyo, Sara Herke, Sabrina Streipert and Sheila Williams

### The invasion speed of cell migration models with realistic cell cycle time distributions

18 April 2019 2:00pm–3:00pm

Enrico Gavagnin, (University of Bath, United Kingdom)

### Mathematical and Experimental Models of Cell Invasion with Fluorescent Cell Cycle Indicators

4 April 2019 2:00pm–3:00pm

Matthew Simpson, (Queensland University of Technology)

### Prof. Achim Kempf, Perimeter Institute for Theoretical Physics "Stone age tools for Quantum Gravity?" 15/03/2019 11:00am

15 March 2019 11:00am–12:00pm

On Friday 15th March 2019, Physics Colloquium will be hosting Prof. Achim Kempf (Professor at University of Waterloo Canada & co-Chair at International Society for Relativisitc Quantum Information) discussing on prospective new methods to study the domain of cosmology, relativity and quantum theory. Following is the abstract of his talk.

Abstract. Relativity and quantum theory each required the abandoning of basic but ultimately incorrect concepts that had previously been considered self evident. Today, the fact that it is so tremendously difficult to develop quantum gravity may indicate that it will again be necessary to abandon some basic concepts, presumably concepts that seem self-evident, that sit deep and go a long way back. The difficulty is, of course, to know which concepts to abandon. How deep will we have to dig or how far back in time will we have to search for the origins of the misconceptions that may need to be overcome? I suggest we go all the way back to the stone age and question, for example, the notion of distance, as measured by measuring sticks and the like. I will argue that it is possible and may be useful for quantum gravity to replace the very notion of spacetime distance by the notion of the correlation strength of vacuum fluctuations.

Bio. Prof. Kempf was an undergraduate at the University of Heidelberg (Germany’s oldest), and he obtained his Ph.D. from the University of Munich. He was a postdoc and a College Research Fellow (Corpus) at the Department of Applied Mathematics and Theoretical Physics (DAMTP) at Cambridge and a postdoc at the Institute for Fundamental Theory at University of Florida. He has been Canada Research Chair, for the Physics of Information for 10 years, he holds a University Research Chair and he is currently co-chair of the International Societry for Relativistic Quantum Information. He’s also an associate member of the IQC.

Abstract. Relativity and quantum theory each required the abandoning of basic but ultimately incorrect concepts that had previously been considered self evident. Today, the fact that it is so tremendously difficult to develop quantum gravity may indicate that it will again be necessary to abandon some basic concepts, presumably concepts that seem self-evident, that sit deep and go a long way back. The difficulty is, of course, to know which concepts to abandon. How deep will we have to dig or how far back in time will we have to search for the origins of the misconceptions that may need to be overcome? I suggest we go all the way back to the stone age and question, for example, the notion of distance, as measured by measuring sticks and the like. I will argue that it is possible and may be useful for quantum gravity to replace the very notion of spacetime distance by the notion of the correlation strength of vacuum fluctuations.

Bio. Prof. Kempf was an undergraduate at the University of Heidelberg (Germany’s oldest), and he obtained his Ph.D. from the University of Munich. He was a postdoc and a College Research Fellow (Corpus) at the Department of Applied Mathematics and Theoretical Physics (DAMTP) at Cambridge and a postdoc at the Institute for Fundamental Theory at University of Florida. He has been Canada Research Chair, for the Physics of Information for 10 years, he holds a University Research Chair and he is currently co-chair of the International Societry for Relativistic Quantum Information. He’s also an associate member of the IQC.

### Non-negative curvature on exotic spheres

26 February 2019 3:00pm–4:00pm

Martin Kerin, University of Münster in Germany