Two Brandeis Professors Receive 2017 Simons Fellowships

11 04 2017
Bit threads in a holographic spacetime

Bit threads in a holographic spacetime

Two Brandeis professors have been awarded Simons Fellowships for 2017. Daniel Ruberman received the 2017 Simons Fellows in Mathematics. Matthew Headrick was awarded the 2017 Simons Fellows in Theoretical Physics. This is the first of two articles where each recipient’s award-winning research is described.

Matthew Headrick’s research studies the phenomenon of entanglement in certain quantum systems and its connection to the geometry of spacetime in general relativity. This very active area of research is the culmination of three developments in theoretical physics over the past 20 years.

First, in 1997, string theorists discovered that certain quantum systems involving a large number of very strongly interacting constituents — whose analysis would normally be intractable — are secretly equivalent to general relativity — a classical theory describing gravity in terms of curved spacetime — in a space with an extra dimension. For example, if the quantum system has two dimensions of space, then the general relativity has three; the phenomenon is thus naturally dubbed “holography”.

This equivalence between two very different-looking theories is incredibly powerful, and has led to much progress in understanding both strongly-interacting quantum systems and general relativity. However, it is still not fully understood how or precisely under what conditions such an equivalence holds.

Meanwhile, around 15 years ago, theorists began studying entanglement as a way to understand the behavior of quantum systems. “Entanglement” refers to correlations between two parts of a quantum system that occurs at the level of the wave function (unlike more familiar classical, or statistical, correlations). Entanglement is responsible for much of the apparent weirdness of quantum mechanics, as well as the power of such potential technologies as quantum cryptography and quantum computers. Although the concept of entanglement has been recognized almost since the birth of quantum mechanics, only recently has it been understood how quantifying entanglement (using certain kinds of entropies) provides powerful insights into the behavior of quantum systems ranging from many-body condensed-matter systems to theories of particle physics.

These two developments came together in 2006, when two physicists, Ryu and Takayanagi — one a condensed-matter theorist and the other a string theorist — made a dramatic conjecture connecting them. They posited that, in a holographic system, the entanglement is directly related to the geometry of space on the general relativity side; more specifically, given a decomposition of the quantum system into two parts, the amount of entanglement is given by the area of a certain minimal surface on the general relativity side. This development has led to many advances in our understanding of entanglement in strongly-interacting systems, and has provided a new framework for thinking about the emergence of space out of quantum constituents.

Since the Ryu-Takayanagi conjecture was originally made, Headrick has been a leader in testing, generalizing, and applying it. Working with Michael Freedman (Microsoft Research), he recently discovered a new way to understand entanglement in holographic systems in terms of microscopic “bit threads” running through space; using the so-called max flow-min cut theorem from network theory, they showed that this picture precisly reproduces the predictions of the Ryu-Takayanagi formula. With his students and other collaborators, Headrick is currently building on this picture. A major focus, for example, is to understand the subtle role that time plays in entanglement and holography.



“Exceptionally Helpful” Matthew Headrick Receives Award

9 03 2017

Associate Professor of Physics Matthew Headrick was named by the American Physical Society as an Outstanding Referee for 2017. The award recognizes “scientists who have been exceptionally helpful in assessing manuscripts for publication in the APS journals”. Headrick, who works in string theory and related areas of theoretical physics, is one of 150 Outstanding Referees named this year, out of about 60,000 active referees for the APS journals. Headrick is not the only Brandeis physicist to receive this honor; Robert Meyer, now Emeritus Professor, was named an Outstanding Referee in 2011.

Headrick’s research is primarily focused on the intersection of quantum gravity, quantum field theory, and quantum information theory. He is specifically interested in information-theoretic aspects of holographic field theories (field theories that are dual to higher-dimensional gravitational theories), such as entanglement entropies and related quantities.



Research Funding For Undergrads: MRSEC Summer Materials Undergraduate Research Fellowships

30 01 2017

The Division of Science wishes to announce that, in 2017, we will offer seven MRSEC Summer  Materials Undergraduate Research Fellowships (SMURF) for Brandeis students doing undergraduate research, sponsored by the Brandeis Materials Research Science and Engineering Center.

The fellowship winners will receive $5,000 stipends (housing support is not included) to engage in an intensive and rewarding research and development program that consists of full-time research in a MRSEC lab, weekly activities (~1-2 hours/week) organized by the MRSEC Director of Education, and participation in SciFest VII on Aug 3, 2017.

The due date for applications is February 27, 2017, at 6:00 PM EST.

To apply, the application form is online and part of the Unified Application: https://goo.gl/9LcSpG (Brandeis login required).


Eligibility

Students are eligible if they will be rising Brandeis sophomores, juniors, or seniors in Summer 2017 (classes of ’18, ’19, and ’20). No prior lab experience is required. A commitment from a Brandeis MRSEC member to serve as your mentor in Summer 2017 is required though. The MRSEC faculty list is: http://www.brandeis.edu/mrsec/people/index.html

Conflicting Commitments
SMURF recipients are expected to be available to do full time laboratory research between May 30 – August 4, 2017. During that period, SMURF students are not allowed to take summer courses, work another job or participate in extensive volunteer/shadowing experiences in which they commit to being out of the lab for a significant amount of time during the summer. Additionally, students should not be paid for doing lab research during this period from other funding sources.

Application Resources
Interested students should apply online (Brandeis login required). Questions that are not answered in the online FAQ may be addressed to Steven Karel <divsci at brandeis.edu>.



Division of Science Hosts the 2016 Undergraduate Science Symposium

21 09 2016

Written by Jena Pitman-Leung.

uss-img1

The Division of Science Graduate Affairs group hosted the 2nd annual Brandeis University Undergraduate Science Symposium on Saturday 17th, 2016. More than 60 students representing institutions from Massachusetts, Rhode Island, and New Hampshire attended the event, which was held in the Shapiro Science Center. The morning session included research talks from faculty in the Life Sciences (Don Katz, Liz Hedstrom) and the Physical Sciences (Matt Headrick, Christine Thomas), followed by panel discussions with faculty in the Life Sciences (Liz Hedstrom, Bruce Goode, and Maria Miara) and Physical Sciences (Gabriella Sciolla, Isaac Krauss, Jordan Pollack) on how to apply to graduate school. The students then came together for a networking lunch with Brandeis students, postdocs, and faculty. Lunch was followed by a well attended poster session, where 38 students had the opportunity to present their independent research. The day ended by awarding prizes for the best posters in five disciplines. The winners were:

Biology: Rahim Hirani, Hampshire College, “The regulatory role of Beta-Arrestin 1 in prostate cancer cell proliferation”
Neuroscience: Paige Miranda, Wellesley College, “Metabolic Processes Driving Hippocampal Long Term Potentiatio”
Biochemistry: Myfanwy Adams, Wellesley College, “Expression of a Cardiac ATP-sensitive Potassium Channel in a Heterologous Cell Line”
Chemistry: Natsuko Yamagata, Brandeis University, “Exploring the Unexplored: Supramolecular Hydrogels of Retro-Inverso Peptides for 3D Cell Culture”
Physics: Jameson O’Reilly, Northeastern University, “A capillary-mimicking optical tissue phantom for diffuse correlation spectroscopy”

The Division of Science is committed to supporting local undergraduate research, and is excited about the possibility of these bright young scientist choosing Brandeis for their graduate study. We look forward to hosting similar events in the future!



SciFest VI recap and stats

11 08 2016

The Brandeis University Division of Science held its annual undergraduate research poster session SciFest VI on August 4, 2016, as a record number of student researchers presented posters with the results of their summer’s (or last year’s) worth of independent research. We had a great audience of grad students, postdocs, faculty, proud parents, and senior administrators.

More pictures and abstract books are available at the SciFest site.

SciFest VI by numbers



SciFest VI recap and stats

11 08 2016

The Brandeis University Division of Science held its annual undergraduate research poster session SciFest VI on August 4, 2016, as a record number of student researchers presented posters with the results of their summer’s (or last year’s) worth of independent research. We had a great audience of grad students, postdocs, faculty, proud parents, and senior administrators.

More pictures and abstract books are available at the SciFest site.

SciFest VI by numbers



REU Students Arrive for 2016 Summer Research

20 07 2016
REU-students-interview-600

Amber Jones and Susan Okrah

Alongside the more than 100 Brandeis science undergrads doing research this summer, there are 19 students who are participating in our Research Experiences for Undergraduates (REU) programs. Some students are from Brandeis, but most call universities in Kansas, Virginia, Pennsylvania, New Jersey their academic homes. Eight students are from Hampton University as part of the Partnership for Research and Education in Materials (PREM) initiative between Hampton and Brandeis. The two universities are focused on fostering interest in research science in under-represented groups of undergraduates.

The two independent REU programs were each created 6 years ago with funding from the National Science Foundation (NSF) with a goal of providing a 10-week period of intensive lab research experience to rising sophomores and juniors interested in scientific careers. Professor Susan Lovett is the director of the Cell and Molecular Visualization REU and Dr. Anique Olivier-Mason is the director of the Material Research Science and Engineering Center (MRSEC) REU.

The online application process required each student to submit a transcript, two letters of recommendation and write two essays describing their research experience (if any) and their academic and research goals. This year, 8 students are participating in the MRSEC site; 11 students are working in the Biology-based Cell and Molecular Visualization REU.

Amber Jones, who is going to be a junior at Hampton University this fall, is working in the Avi Rodal lab where she is researching how proteins can be taken on and off of cell membranes. From here, she is hoping to target specific proteins that will ultimately aid in disease research.

Amber has worked in a lab before, but believes nothing could have prepared her for her experience at Brandeis. Her REU lab work has been very involved, but she wasn’t expecting the ups and downs that are a part of lab research. The graduate students and other lab members have been supportive. She has been told “it’s okay; it’s science!”

Returning REU student, Alex Cuadros is working in the Liz Hedstrom lab, says he can go to Cell and Molecular Visualization REU coordinators Cara Pina and Laura Laranjo for assistance. They “have more experience in the lab and they tell me that things don’t always work for them. They say that ‘it’s just part of the science’.”

Nicholas Martinez, who is working in Timothy Street’s lab said, “The biggest challenge I have encountered this summer with my research is being able to do cope with disappointment. Since I am working on a defined timetable and my time here at Brandeis is limited, I want to make as much progress as possible with my research.”

Susan Okrah is working in the Seth Fraden lab this summer. She believes this experience is different from a Chemistry class at Hampton University where you are given an experiment and the results are known. In the REU program, students are given a project that is a subset of their lab’s research. Unlike school, the outcome of their research is unknown. Susan said, “We are given a direction and told to see if it works.”

Alex said that in class he has learned how to do experiments, but at Brandeis he is “doing something that has not been done before so there’s no right method.” It’s also helpful to be able to ask advice about how to approach his research and “Then you go back and you figure out how to do it. You are forced to think independently.”

During the academic year, Alex works in a Biochemistry lab at UMass Amherst. He landed the job last fall as a direct result of his 2015 REU research. How did he get the job in a very competitive environment on the large UMass campus? He presented the poster that he prepared for SciFest 2015.

The most valuable lesson learned this summer? “Resilience” said Amber. Learning to cope with the changing tides of research is important. As Susan said, “people don’t really understand what goes into research until they’re here.”

Part of the REU program involves attending journal clubs and lab meetings, but the most valuable experience of this program is simply being in a lab. Both Amber and Susan agree that anyone thinking about a career in research should go through an intensive research experience such as this. Jones noted, “I wasn’t really expecting to get this type of understanding. I really appreciate that now that I’m here.”

Both Nicholas and Alex ultimately would like to attend graduate school. For Nicholas, “being able to participate in the Cell and Molecular Visualization REU program at Brandeis has been a great opportunity for me to diversify my knowledge and skill set in scientific research prior to applying for graduate school next year. This It has been a great way for me to gain experience in a new area of research that I am interested in and to become part of a different scientific community.”

The REU students are hard at work wrapping up their research and preparing their posters for the SciFest 2016 poster session that is scheduled for Thursday, August 4.



REU Students Arrive for 2016 Summer Research

20 07 2016
REU-students-interview-600

Amber Jones and Susan Okrah

Alongside the more than 100 Brandeis science undergrads doing research this summer, there are 19 students who are participating in our Research Experiences for Undergraduates (REU) programs. Some students are from Brandeis, but most call universities in Kansas, Virginia, Pennsylvania, New Jersey their academic homes. Eight students are from Hampton University as part of the Partnership for Research and Education in Materials (PREM) initiative between Hampton and Brandeis. The two universities are focused on fostering interest in research science in under-represented groups of undergraduates.

The two independent REU programs were each created 6 years ago with funding from the National Science Foundation (NSF) with a goal of providing a 10-week period of intensive lab research experience to rising sophomores and juniors interested in scientific careers. Professor Susan Lovett is the director of the Cell and Molecular Visualization REU and Dr. Anique Olivier-Mason is the director of the Material Research Science and Engineering Center (MRSEC) REU.

The online application process required each student to submit a transcript, two letters of recommendation and write two essays describing their research experience (if any) and their academic and research goals. This year, 8 students are participating in the MRSEC site; 11 students are working in the Biology-based Cell and Molecular Visualization REU.

Amber Jones, who is going to be a junior at Hampton University this fall, is working in the Avi Rodal lab where she is researching how proteins can be taken on and off of cell membranes. From here, she is hoping to target specific proteins that will ultimately aid in disease research.

Amber has worked in a lab before, but believes nothing could have prepared her for her experience at Brandeis. Her REU lab work has been very involved, but she wasn’t expecting the ups and downs that are a part of lab research. The graduate students and other lab members have been supportive. She has been told “it’s okay; it’s science!”

Returning REU student, Alex Cuadros is working in the Liz Hedstrom lab, says he can go to Cell and Molecular Visualization REU coordinators Cara Pina and Laura Laranjo for assistance. They “have more experience in the lab and they tell me that things don’t always work for them. They say that ‘it’s just part of the science’.”

Nicholas Martinez, who is working in Timothy Street’s lab said, “The biggest challenge I have encountered this summer with my research is being able to do cope with disappointment. Since I am working on a defined timetable and my time here at Brandeis is limited, I want to make as much progress as possible with my research.”

Susan Okrah is working in the Seth Fraden lab this summer. She believes this experience is different from a Chemistry class at Hampton University where you are given an experiment and the results are known. In the REU program, students are given a project that is a subset of their lab’s research. Unlike school, the outcome of their research is unknown. Susan said, “We are given a direction and told to see if it works.”

Alex said that in class he has learned how to do experiments, but at Brandeis he is “doing something that has not been done before so there’s no right method.” It’s also helpful to be able to ask advice about how to approach his research and “Then you go back and you figure out how to do it. You are forced to think independently.”

During the academic year, Alex works in a Biochemistry lab at UMass Amherst. He landed the job last fall as a direct result of his 2015 REU research. How did he get the job in a very competitive environment on the large UMass campus? He presented the poster that he prepared for SciFest 2015.

The most valuable lesson learned this summer? “Resilience” said Amber. Learning to cope with the changing tides of research is important. As Susan said, “people don’t really understand what goes into research until they’re here.”

Part of the REU program involves attending journal clubs and lab meetings, but the most valuable experience of this program is simply being in a lab. Both Amber and Susan agree that anyone thinking about a career in research should go through an intensive research experience such as this. Jones noted, “I wasn’t really expecting to get this type of understanding. I really appreciate that now that I’m here.”

Both Nicholas and Alex ultimately would like to attend graduate school. For Nicholas, “being able to participate in the Cell and Molecular Visualization REU program at Brandeis has been a great opportunity for me to diversify my knowledge and skill set in scientific research prior to applying for graduate school next year. This It has been a great way for me to gain experience in a new area of research that I am interested in and to become part of a different scientific community.”

The REU students are hard at work wrapping up their research and preparing their posters for the SciFest 2016 poster session that is scheduled for Thursday, August 4.






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